cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Optical signature of the pressure-induced dimerization in the honeycomb iridate $α$-Li$_2$IrO$_3$
Creators: name: Hermann, V.
name: Ebad-Allah, J.
name: Freund, F.
name: Jesche, A.
name: Tsirlin, A. A.
name: Gegenwart, P.
name: Kuntscher, C. A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We studied the effect of external pressure on the electrodynamic properties of $α$-Li$_2$IrO$_3$ single crystals in the frequency range of the phonon modes and the Ir $d$-$d$ transitions. The abrupt hardening of several phonon modes under pressure supports the onset of the dimerized phase at the critical pressure $P_c$=3.8 GPa. With increasing pressure an overall decrease in spectral weight of the Ir $d$-$d$ transitions is found up to $P_c$. Above $P_c$, the local (on-site) $d$-$d$ excitations gain spectral weight with increasing pressure, which hints at a pressure-induced increase in the octahedral distortions. The non-local (intersite) Ir $d$-$d$ transitions show a monotonic blue-shift and decrease in spectral weight. The changes observed for the non-local excitations are most prominent well above $P_c$, namely for pressures $\geq$12 GPa, and only small changes occur for pressures close to $P_c$. The profile of the optical conductivity at high pressures ($\sim$20 GPa) appears to be indicative for the dimerized state in iridates.
description: 10 pages, 6 figures; accepted for publication in Phys. Rev. B
Weak UCP and perturbed monopole equations
Creators: name: Booss-Bavnbek, B.
name: Marcolli, M.
name: Wang, B. L.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 57R57

description: We give a simple proof of weak Unique Continuation Property for perturbed Dirac operators, using the Carleman inequality. We apply the result to a class of perturbations of the Seiberg-Witten monopole equations that arise in Floer theory.
description: 22 pages LaTeX, one .eps figure
Breakdown of Energy Equipartition in a 2D Binary Vibrated Granular Gas
Creators: name: Feitosa, Klebert
name: Menon, Narayanan
Publisher: name: arXiv
Year: 2001
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We report experiments on the equipartition of kinetic energy between grains made of two different materials in a mixture of grains vibrated in 2 dimensions. In general, the two types of grains do not attain the same granular temperature, Tg = 1/2m v^2. However, the ratio of the two temperatures is constant in the bulk of the system and independent of the vibration velocity. The ratio depends strongly on the ratio of mass densities of the grains, but is not sensitive to the inelasticity of grains. Also, this ratio is insensitive to compositional variables of the mixture such as the number fraction of each component and the total number density. We conclude that a single granular temperature, as traditionally defined, does not characterize a multi-component mixture.
description: 4 pages, 5 figures, submitted to Physical Review Letters, updated references
Granular Elasticity without the Coulomb Condition
Creators: name: Jiang, Yimin
name: Liu, Mario
Publisher: name: arXiv
Year: 2002
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: An self-contained elastic theory is derived which accounts both for mechanical yield and shear-induced volume dilatancy. Its two essential ingredients are thermodynamic instability and the dependence of the elastic moduli on compression.
description: 4pages, 2 figures
A code for robust astrometric solution of astronomical images
Creators: name: Ofek, Eran O.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: I present a software tool for solving the astrometry of astronomical images. The code puts emphasis on robustness against failures for correctly matching the sources in the image to a reference catalog, and on the stability of the solutions over the field of view (e.g., using orthogonal polynomials for the fitted transformation). The code was tested on over 50,000 images from various sources, including the Palomar Transient Factory (PTF) and the Zwicky Transient Facility (ZTF). The tested images equally represent low and high Galactic latitude fields and exhibit failure/bad-solution rate of <2x10^-5. Running on PTF 60-s integration images, and using the GAIA-DR2 as a reference catalog, the typical two-axes-combined astrometric root-mean square (RMS) is 14 mas at the bright end, presumably due to astrometric scintillation noise and systematic errors. I discuss the effects of seeing, airmass and the order of the transformation on the astrometric accuracy. The software, available online, is developed in MATLAB as part of an astronomical image processing environment and it can be run also as a stand-alone code.
description: 5 pages, PASP in press
Supplementary material from "Extreme heat reduces host and parasite performance in a butterfly-parasite interaction"
Creators: name: Ragonese, Isabella G.
name: Sarkar, Maya R.
name: Hall, Richard J.
name: Altizer, Sonia
Publisher: name: The Royal Society
Year: 2024
Subjects: classificationCode: 310399
subject: Ecology not elsewhere classified
classificationCode: 420299
subject: Epidemiology not elsewhere classified

description: This file contains output from statistical models, details on analyses, and supporting figures not included in the main text
Quantum Cosmology With R+R^2 Gravity
Creators: name: Sanyal, A. K.
name: Modak, B.
Publisher: name: arXiv
Year: 2001
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Canonical quantization of an action containing curvature squared term requires introduction of an auxiliary variable. Boulware etal[1] prescribed a technique to choose such a variable, by taking derivative of an action with respect to the highest derivative of the field variable, present in the action.It has been shown that[2] this technique can even be applied in situations where introduction of auxiliary variables are not at all required, leading to wrong Wheeler-deWitt equation. It has also been pointed out that[2] Boulware etal's[1] prescription should be taken up only after removing all removable total derivative terms from the action. Once this is done only a unique description of quantum dynamics would emerge. For curvature squared term this technique yields, for the first time, a quantum mechanical probability interpretation of quantum cosmology, and an effective potential, whose extremization leads to Einstein's equation. We conclude that Einstein-Hilbert action should essentially be modified by at least a curvature squared term to get a quantum mechanical formulation of quantuum cosmology and hence extend our previous work[2] for such an action along with a scalar field.
description: 8 pages, Latex2e
Estimation of nucleon D-term in QCD
Creators: name: Anikin, I. V.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Using the light-cone sum rules at leading order, we present an approach to perform the preliminary upper estimation for the nucleon gravitational form factor $D(t)$ ($D$-term contribution). Comparison with the experimental data and with the results of different models is discussed.
description: 6 pages, 2 figures; The Special Issue "QCD and Hadron Structure" devoted to the memory of Prof. G.V. Efimov. arXiv admin note: substantial text overlap with arXiv:1902.00094
A Promising New Trend? Factors Driving China's Growing Trilateral Aid Cooperation
Creators: name: Zhang, Denghua
Publisher: name: The Australian National University
Year: 2017
Subjects: foreign aid
trilateral aid cooperation
China's foreign aid
China's foreign policy
development cooperation

description: China, as an emerging donor, has attracted growing international attention and raised grave concerns about its impact on the international aid regime. Despite its distinctive aid norms and practice, and its refusal to align with the international aid regime, China is conducting an increasing number of trilateral aid projects with traditional donor states and multilateral development agencies. As this new trend of cooperation has not received sufficient academic attention yet and remains poorly understood, this research project proposes to fill the gap and probe into the main factors driving Chinese trilateral aid cooperation. At a time when China’s foreign aid is increasing substantially and its impact on the traditional aid architecture remains unclear, this research will also enrich the debate on Chinese foreign aid. Moreover, as foreign aid is an integral part of China’s foreign policy since 1950, this thesis hopes to facilitate our understanding of China’s foreign policy through the lens of foreign aid. I am drawing upon constructivism and cognitive learning theories in the analysis, and taking a three-layered approach that brings together China’s national interests, international engagement and domestic institutions. This study has focused on the Asia– Pacific region and analysed in detail three case studies involving Chinese trilateral aid cooperation with the United Nations Development Program, Australian and the United States in Cambodia, Papua New Guinea and Timor-Leste respectively. Based on my research, the thesis argues that China’s adoption of trilateral aid cooperation reflects China’s stronger desire for global image building as a responsible great power and its increasing desire to learn through growing international engagement on development cooperation. Implications are also drawn for future cooperation between traditional donors/multilateral development agencies and China.
Structural and Superconducting Transitions in Mg_{1-x}Al_{x}B_2
Creators: name: Barabash, Sergey V.
name: Stroud, David
Publisher: name: arXiv
Year: 2001
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: From systematic ab initio calculations of the alloy system Mg_{1-x}Al_{x}B_2, we find a strong tendency for the formation of a superstructure characterized by Al-rich layers. We also present a simple model, based on calculated energies and an estimate of the configurational entropy, which suggests that the alloy has two separate concentration regimes of phase separation, with critical points near x = 0.25 and x = 0.75. These results, together with calculations of electronic densities of states in several ionic arrangements, give a qualitative explanation for the observed structural instabilities, as well as the x-dependence of the superconducting T_c for x<0.6.
description: 4 pp./4 figs.; revisions in responce to Referee comments
Safety-related Tasks within the Set-Based Task-Priority Inverse Kinematics Framework
Creators: name: Di Lillo, Paolo
name: Arrichiello, Filippo
name: Antonelli, Gianluca
name: Chiaverini, Stefano
Publisher: name: arXiv
Year: 2019
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: In this paper we present a framework that allows the motion control of a robotic arm automatically handling different kinds of safety-related tasks. The developed controller is based on a Task-Priority Inverse Kinematics algorithm that allows the manipulator's motion while respecting constraints defined either in the joint or in the operational space in the form of equality-based or set-based tasks. This gives the possibility to define, among the others, tasks as joint-limits, obstacle avoidance or limiting the workspace in the operational space. Additionally, an algorithm for the real-time computation of the minimum distance between the manipulator and other objects in the environment using depth measurements has been implemented, effectively allowing obstacle avoidance tasks. Experiments with a Jaco$^2$ manipulator, operating in an environment where an RGB-D sensor is used for the obstacles detection, show the effectiveness of the developed system.
Cyclantispa gracilis Sekerka 2014, comb. nov.
Creators: name: Sekerka, Lukáš
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Chrysomelidae
Cyclantispa
Cyclantispa gracilis

description: Cyclantispa gracilis (Baly, 1885) comb. nov.
 Homalispa gracilis Baly, 1885: 8 (type locality: ‘ Panama, Bugaba’; HT! in BMNH!).
 Distribution. Costa Rica (STAINES 1996) and Panama (BALY 1885).
description: Published as part of Sekerka, Lukáš, 2014, Review of Imatidiini genera (Coleoptera: Chrysomelidae: Cassidinae), pp. 257-314 in Acta Entomologica Musei Nationalis Pragae 54 (1) on page 295, DOI: 10.5281/zenodo.5301732
Xylocleptes bispinus (Duftschmid, 1825) (Coleoptera: Curculionidae) i Leptophloeus clematidis (Erichson, 1846) (Coleoptera: Laemophloeidae) w Warszawie. / Xylocleptes bispinus (Duftschmid, 1825) (Coleoptera: Curculionidae) and Leptophloeus clematidis (Erichson, 1846) (Coleoptera: Laemophloeidae) in Warsaw.
Creators: name: MARCZAK, Dawid
Publisher: name: Polskie Towarzystwo Entomologiczne
Year: 2024
Subjects: beetles, new data, Mazovian Lowland, saproxylic beetles, bark beetles, Clematis vitalba

description: The paper presents the first record of Leptophloeus clematidis (ERICHSON, 1846) (Coleoptera: Laemophloeidae) and second record of Xylocleptes bispinus (DUFTSCHMID, 1825) (Coleoptera: Curculionidae) in Warsaw (central Poland). Leptophloeus clematidis is a new species for the Mazovian Lowland.
Cyclantispa subelongata Sekerka 2014, comb. nov.
Creators: name: Sekerka, Lukáš
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Chrysomelidae
Cyclantispa
Cyclantispa subelongata

description: Cyclantispa subelongata (Pic, 1936) comb. nov.
 Homalispa subelongata Pic, 1936: 13 (type locality: ‘Bolivia’; ST! in MNHN!).
 Distribution. Bolivia (PIC 1936).
description: Published as part of Sekerka, Lukáš, 2014, Review of Imatidiini genera (Coleoptera: Chrysomelidae: Cassidinae), pp. 257-314 in Acta Entomologica Musei Nationalis Pragae 54 (1) on page 295, DOI: 10.5281/zenodo.5301732
A six year image-subtraction light curve of SN 2010jl
Creators: name: Ofek, E. O.
name: Zackay, B.
name: Gal-Yam, A.
name: Sollerman, J.
name: Fransson, C.
name: Fremling, C.
name: Kulkarni, S. R.
name: Nugent, P. E.
name: Yaron, O.
name: Kasliwal, M. M.
name: Masci, F.
name: Laher, R.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: SN2010jl was a luminous Type IIn supernova (SN), detected in radio, optical, X-ray and hard X-rays. Here we report on its six year R- and g-band light curves obtained using the Palomar Transient Factory. The light curve was generated using a pipeline based on the proper image subtraction method and we discuss the algorithm performances. As noted before, the R-band light curve, up to about 300 days after maximum light is well described by a power-law decline with a power-law index of about -0.5. Between day 300 and day 2300 after maximum light, it is consistent with a power-law decline, with a power-law index of about -3.4. The longevity of the light curve suggests that the massive circum-stellar material around the progenitor was ejected on time scales of at least tens of years prior to the progenitor explosion.
description: 6 pages, PASP in press
The metal-insulator transitions of VO2: A band theoretical approach
Creators: name: Eyert, Volker
Publisher: name: arXiv
Year: 2002
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The results of first principles electronic structure calculations for the metallic rutile and the insulating monoclinic M1 phase of vanadium dioxide are presented. In addition, the insulating M2 phase is investigated for the first time. The density functional calculations allow for a consistent understanding of all three phases. In the rutile phase metallic conductivity is carried by metal t_2g orbitals, which fall into the one-dimensional d_parallel band, and the isotropically dispersing e_g^pi bands. Hybridization of both types of bands is weak. In the M1 phase splitting of the d_parallel band due to metal-metal dimerization and upshift of the e_g^pi bands due to increased p-d overlap lead to an effective separation of both types of bands. Despite incomplete opening of the optical band gap due to the shortcomings of the local density approximation, the metal-insulator transition can be understood as a Peierls-like instability of the d_parallel band in an embedding background of e_g^pi electrons. In the M2 phase, the metal-insulator transition arises as a combined embedded Peierls-like and antiferromagnetic instability. The results for VO2 fit into the general scenario of an instability of the rutile-type transition-metal dioxides at the beginning of the d-series towards dimerization or antiferromagnetic ordering within the characteristic metal chains. This scenario was successfully applied before to MoO2 and NbO2. In the d^1 compounds, the d_parallel and e_g^pi bands can be completely separated, which leads to the observed metal-insulator transitions.
description: 61 pages, 42 figures
On choice of connection in loop quantum gravity
Creators: name: Alexandrov, Sergei
Publisher: name: arXiv
Year: 2001
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the quantum area operator in the loop approach based on the Lorentz covariant hamiltonian formulation of general relativity. We show that there exists a two-parameter family of Lorentz connections giving rise to Wilson lines which are eigenstates of the area operator. For each connection the area spectrum is evaluated. In particular, the results of the su(2) approach turn out to be included in the formalism. However, only one connection from the family is a spacetime connection ensuring that the 4d diffeomorphism invariance is preserved under quantization. It leads to the area spectrum independent of the Immirzi parameter. As a consequence, we conclude that the su(2) approach must be modified accordingly to the results obtained since it breaks one of the classical symmetries.
description: 11 pages, RevTEX; minor changes; a sign mistake corrected
Additional file 1: of Prognostic role of pretreatment thrombocytosis on survival in patients with cervical cancer: a systematic review and meta-analysis
Creators: name: Weijuan Cao
name: Xiaomin Yao
name: Danwei Cen
name: Yajun Zhi
name: Ningwei Zhu
name: Liyong Xu
Publisher: name: figshare
Year: 2019
Subjects: Biophysics
Cell Biology
Molecular Biology
Biotechnology
Cancer
Science Policy
Hematology

description: Figure S1. Sensitivity analysis for OS. Figure S2. Sensitivity analysis for PFS. Figure S3. Sensitivity analysis for RFS. (DOCX 438 kb)
Conformally invariant boundary conditions in the antiferromagnetic Potts model and the $SL(2,\mathbb{R})/U(1)$ sigma model
Creators: name: Robertson, Niall F.
name: Jacobsen, Jesper Lykke
name: Saleur, Hubert
Publisher: name: arXiv
Year: 2019
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We initiate a study of the boundary version of the square-lattice $Q$-state Potts antiferromagnet, with $Q \in [0,4]$ real, motivated by the fact that the continuum limit of the corresponding bulk model is a non-compact CFT, closely related with the $SL(2,\mathbb{R})_k/U(1)$ Euclidian black-hole coset model. While various types of conformal boundary conditions (discrete and continuous branes) have been formally identified for the the $SL(2,\mathbb{R})_k/U(1)$ coset CFT, we are only able in this work to identify conformal boundary conditions (CBC) leading to a discrete boundary spectrum. The conformal boundary conditions (CBC) we find are of two types. The first is free boundary Potts spins, for which we confirm an old conjecture for the generating functions of conformal levels, and show them to be related to characters in a non-linear deformation of the $W_\infty$ algebra. The second type of CBC - which corresponds to restricting the values of the Potts spins to a subset of size $Q_1$, or its complement of size $Q-Q_1$, at alternating sites along the boundary - is new, and turns out to be conformal in the antiferromagnetic case only. Using algebraic and numerical techniques, we show that the corresponding spectrum generating functions produce all the characters of discrete representations for the coset CFT. The normalizability bounds of the associated discrete states in the coset CFT are found to have a simple interpretation in terms of boundary phase transitions in the lattice model. For $\sqrt{Q} = 2 \cos \fracπ{k}$, with $k \ge 3$ integer, we show also how our boundary conditions can be reformulated in terms of a RSOS height model. The spectrum generating functions are then identified with string functions of the compact $SU(2)_{k-2} / U(1)$ parafermion theory (with symmetry $Z_{k-2}$). The new alt conditions are needed to cover all the string functions.
description: added references for section 9
Demotispa coccinata Sekerka 2014, comb. nov.
Creators: name: Sekerka, Lukáš
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Chrysomelidae
Demotispa
Demotispa coccinata

description: Demotispa coccinata (Boheman, 1862) comb. nov.
 Himatidium coccinatum Boheman, 1862: 33 (type locality: ‘Ega prope fluvium Amazonum’; ST! in BMNH!).
 Distribution. Brazil: Amazonas (BOHEMAN 1862) and Peru: San Martín (SPAETH 1942).
description: Published as part of Sekerka, Lukáš, 2014, Review of Imatidiini genera (Coleoptera: Chrysomelidae: Cassidinae), pp. 257-314 in Acta Entomologica Musei Nationalis Pragae 54 (1) on page 295, DOI: 10.5281/zenodo.5301732
A Duality Between Unidirectional Charge Density Wave Order and Superconductivity
Creators: name: Lee, Dung-Hai
Publisher: name: arXiv
Year: 2001
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: This paper shows the existence of a duality between an unidirectional charge density wave order and a superconducting order. This duality predicts the existence of charge density wave near a superconducting vortex, and the existence of superconductivity near a charge density wave dislocation.
description: Main results are the same, but the presentation is significantly modified. To appear in Physical Review Letters
Additional file 1: of Assignment of virus and antimicrobial resistance genes to microbial hosts in a complex microbial community by combined long-read assembly and proximity ligation
Creators: name: Bickhart, Derek
name: Watson, Mick
name: Koren, Sergey
name: Panke-Buisse, Kevin
name: Cersosimo, Laura
name: Press, Maximilian
name: Tassell, Curtis
name: Kessel, Jo
name: Bradd Haley
name: Kim, Seon
name: Heiner, Cheryl
name: Suen, Garret
name: Kiranmayee Bakshy
name: Liachko, Ivan
name: Sullivan, Shawn
name: Myer, Phillip
name: Ghurye, Jay
name: Pop, Mihai
name: Weimer, Paul
name: Phillippy, Adam
name: Smith, Timothy
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology

description: Supplementary figures and methods. Contains all supplementary figures and two supplementary tables. Additionally, contains a brief listing of additional methods and command line code for replicating analysis. (DOCX 3839 kb)
Additional file 2: of Prognostic role of pretreatment thrombocytosis on survival in patients with cervical cancer: a systematic review and meta-analysis
Creators: name: Weijuan Cao
name: Xiaomin Yao
name: Danwei Cen
name: Yajun Zhi
name: Ningwei Zhu
name: Liyong Xu
Publisher: name: figshare
Year: 2019
Subjects: subject: Biophysics
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Figure S1. Funnel plot for OS. Figure S2. Funnel plot for PFS. Figure S3. Funnel plot for RFS. (DOCX 348 kb)
Ideal type-II Weyl phonons in wurtzite CuI
Creators: name: Liu, Jian
name: Hou, Wenjie
name: Wang, En
name: Zhang, Shengjie
name: Sun, Jia-Tao
name: Meng, Sheng
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Weyl semimetals exhibitinging the topologically nontrivial touching points in electronic band dispersion of solids pave the wave way to novel electronic devices and functionalities. Here, we demonstrate the signature of topologically nontrivial Weyl points (WPs) in phonon dispersion of solids through a first-principles investigations. ofT noncentrosymmetric wurtzite CuI (cuprous iodide at high temperature). These type-II phononic WP in phonon dispersion of wurtzite CuI is manifested in noncentrosymmetric wurtzite CuI by six pairs of the nontrivial touching points in the k_z=0.0 plane. The ideal WPs in phonon dispersion are completely isolated from bulk phonon continuum, are different distinct from many type-II WPs in electronic band dispersion of solids associated with the overlapping band states. The opposite chirality of Weyl phonon nodes with quantized Berry curvature are utilized forproduces Weyl phonon Hall effect, in analogous analogy towith valley Hall effect of electrons. Such ideal type-II Weyl phonons are phase is readily observable in experiment, and could provideing a unique platform to study novel thermal transport properties different distinct from that in type-I Weyl phonons phase.
Can Black Holes Decay to Naked Singularities?
Creators: name: Das, Saurya
name: Gegenberg, J.
name: Husain, V.
Publisher: name: arXiv
Year: 2001
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate thermodynamic properties of two types of asymptotically anti-de Sitter spacetimes: black holes and singular scalar field spacetimes. We describe the possibility that thermodynamic phase transitions can transform one spacetime into another, suggesting that black holes can radiate to naked singularities.
description: 5 pages, Essay for 2001 Gravity Research Foundation competition, to appear in IJMPD
Coarse woody debris decay rates and carbon stocks in New Zealand’s natural forest
Creators: name: Kimberley, Mark
name: Beets, Peter
name: Paul, Thomas
Publisher: name: F1000 Research Limited
Year: 2019

description: Mark O. Kimberley, Peter N. Beets and Thomas S.H. Paul, Scion, Rotorua, New Zealand

Background/Question/Methods

New Zealand uses a national forest inventory to assess carbon in live and dead pools in its natural forest. Coarse woody debris (CWD) carbon is estimated by multiplying volumes of dead stems and fallen pieces with wood and bark density, a density modifier based on a 5-level decay class scale, and the carbon fraction. Two cycles of the inventory have been completed with both providing CWD carbon estimates of approximately 20 t C ha-1 indicating the CWD pool is not changing over time.

Independently, exponential decay constants have been determined for common tree species from measurements of fallen stems. However, predicted annual decay loses from the CWD pool based on these decay constants are substantially lower than inventory estimates of tree mortality. This discrepancy provides evidence that the inventory substantially underestimates the CWD pool.
In the current study, decay rates were estimated using an alternative approach based on the proportion of matched pieces of CWD transferring across decay classes between inventory measurements. The objective of the study was to compare inventory estimates of CWD carbon stock changes with stock changes predicted using decay constants and measured mortality, and identify likely causes of discrepancies.

Results/Conclusions

The half-life or time for CWD to lose 50% dry weight in New Zealand’s natural forest was estimated from the proportion of matched pieces transferring across decay classes between inventory assessments, and the quantity of stocks in each decay class. The volume-weighted average half-life was 25.8 years, almost identical to the estimate of 25.5 years based on decay constants derived from measurements of fallen stems obtained independently of the inventory. In contrast, an estimate based from the biomass balance equation using measured carbon stocks and mortality was only 16.4 years. It is likely that the discrepancy of this third estimate with the first two estimates is due to CWD stocks measured in the inventory being too low.

Coarse woody debris in natural forest is extremely difficult to measure accurately. We conclude that the methods used in the N.Z. natural forest inventory substantially underestimate CWD carbon stocks. Actual stocks of CWD are likely to average about 30 t C ha-1 compared with the measured value of 20 t C ha-1.
It is likely that the underestimate of CWD by the inventory is due to multiple factors. In particular, the measurement protocols exclude wood that is heavily decayed, bark and sapwood that has sloughed off stems, and dead wood buried in the forest floor. It is also probable that the density modifiers used in the analysis over-state the loss in density of decayed wood.
Strain, nano-phase separation, multi-scale structures and function of advanced materials
Creators: name: Billinge, S. J. L.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Recent atomic pair distribution function results from our group from manganites and cuprate systems are reviewed in light of the presence of multi-scale structures. These structures have a profound effect on the material properties
description: 17 pages, 7 figures, 41 references, ICTP02 conference, to be published by World Scientific
Area spectrum in Lorentz covariant loop gravity
Creators: name: Alexandrov, S.
name: Vassilevich, D.
Publisher: name: arXiv
Year: 2001
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We use the manifestly Lorentz covariant canonical formalism to evaluate eigenvalues of the area operator acting on Wilson lines. To this end we modify the standard definition of the loop states to make it applicable to the present case of non-commutative connections. The area operator is diagonalized by using the usual shift ambiguity in definition of the connection. The eigenvalues are then expressed through quadratic Casimir operators. No dependence on the Immirzi parameter appears.
description: 12 pages, RevTEX; improved layout, typos corrected, references added; changes in the discussion in sec. IIIB and V
Scaling of decoherence and energy flow in interacting quantum spin systems
Creators: name: Rossini, Davide
name: Vicari, Ettore
Publisher: name: arXiv
Year: 2019
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We address the quantum dynamics of a system composed of a qubit globally coupled to a many-body system characterized by short-range interactions. We employ a dynamic finite-size scaling framework to investigate the out-of-equilibrium dynamics arising from the sudden variation (turning on) of the interaction between the qubit and the many-body system, in particular when the latter is in proximity of a quantum first-order or continuous phase transition. Although the approach is quite general, we consider d-dimensional quantum Ising spin models in the presence of transverse and longitudinal fields, as paradigmatic quantum many-body systems. To characterize the out-of-equilibrium dynamics, we focus on a number of quantum-information oriented properties of the model. Namely, we concentrate on the decoherence features of the qubit, the energy interchanges among the qubit and the many-body system during the out-of-equilibrium dynamics, and the work distribution associated with the quench. The scaling behaviors predicted by the dynamic finite-size scaling theory are verified through extensive numerical computations for the one-dimensional Ising model, which reveal a fast convergence to the expected asymptotic behavior with increasing the system size.
description: 16 pages, 9 figures
Two-dimensional Non-Hermitian Delocalization Transition as a Probe for the Localization Length
Creators: name: Kuwae, Tsunenao
name: Taniguchi, Nobuhiko
Publisher: name: arXiv
Year: 2001
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: When one applies a type of non-Hermitian effect, constant imaginary vector potential, to disordered systems, delocalization is induced even in two or lower dimension. By using the non-Hermitian induced transition as a probe, We propose a new procedure of estimating localization in arbitrary-dimensional systems. By examining numerically the two-dimensional non-Hermitian tight-biding model with onsite disorder, it is shown that the failure of absorbing the non-Hermitian effect, namely the breakdown of the imaginary gauge transformation, characterize the inverse localization length near the band center.
description: 4 pages, 4 figs
Demotispa flavipennis Sekerka 2014, comb. nov.
Creators: name: Sekerka, Lukáš
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Chrysomelidae
Demotispa
Demotispa flavipennis

description: Demotispa flavipennis (Pic, 1923) comb. nov.
 Demothispa Àavipennis Pic, 1923: 8 (type locality: ‘Bolivie’; HT! in MNHN!).
 Remarks. Although I have examined holotype of this species, I am not fully convinced it belongs to Demotispa, as it has quite a convex body, narrow pronotum and the mouthparts seem somewhat protruding anteriad. Further study of the specimen, including full examination of the verntral parts (specimen is currently glued to a card), will be necessary to clarify its classi¿cation.
 Distribution. Bolivia: Cochabamba (DESCARPENTRIES & VILLIERS 1959).
description: Published as part of Sekerka, Lukáš, 2014, Review of Imatidiini genera (Coleoptera: Chrysomelidae: Cassidinae), pp. 257-314 in Acta Entomologica Musei Nationalis Pragae 54 (1) on page 295, DOI: 10.5281/zenodo.5301732
c-Axis Intra-Layer Couplings in the CuO_2 Planes of High-T_c Cuprates
Creators: name: Röhler, J.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We discuss the static deformations of the doped CuO_2 lattices in YBa_2Cu_3O_x. Intrinsic lattice effects driven by the strong correlations of the electron system are separated from extrinsic chemical and bandstructure effects. c-axis displacements of the planar copper atoms seem to be a generic property of the metallic CuO_2 lattices.
description: 8 pages, 4figures, to appear in Proc. NATO ARW "Concepts in Electron Correlation", Hvar, Croatia (2002)
A Note on the dS Swampland Conjecture, Non-BPS branes and K-theory
Creators: name: Blumenhagen, Ralph
name: Brinkmann, Max
name: Makridou, Andriana
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We point out that the de Sitter swampland conjecture would be falsified if classical fluxed Type IIA orientifold vacua with a single non-BPS D7-brane were indeed part of the string theory landscape. In other words, the dS swampland conjecture implies the cancellation of K-theory charges on a compact space.
description: 13 pages, 1 figure; v2: minor corrections, references added
Local contribution of a quantum condensate to the vacuum energy density
Creators: name: Modanese, G.
Publisher: name: arXiv
Year: 2001
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We evaluate the local contribution g_[mu nu]L of coherent matter with lagrangian density L to the vacuum energy density. Focusing on the case of superconductors obeying the Ginzburg-Landau equation, we express the relativistic invariant density L in terms of low-energy quantities containing the pairs density. We discuss under which physical conditions the sign of the local contribution of the collective wave function to the vacuum energy density is positive or negative. Effects of this kind can play an important role in bringing about local changes in the amplitude of gravitational vacuum fluctuations - a phenomenon reminiscent of the Casimir effect in QED.
description: LaTeX, 8 pages. Final journal version
Demotispa filicornis Sekerka 2014, comb. nov.
Creators: name: Sekerka, Lukáš
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Chrysomelidae
Demotispa
Demotispa filicornis

description: Demotispa filicornis (Borowiec, 2000) comb. nov.
 Stilpnaspis ¿licornis Borowiec, 2000: 152 (type locality: ‘ Ecuador, Santa Inez’; HT! in DBET!).
 Distribution. Ecuador: Pichincha (BOROWIEC 2000).
description: Published as part of Sekerka, Lukáš, 2014, Review of Imatidiini genera (Coleoptera: Chrysomelidae: Cassidinae), pp. 257-314 in Acta Entomologica Musei Nationalis Pragae 54 (1) on page 295, DOI: 10.5281/zenodo.5301732
Tension Perturbations of Black Brane Spacetimes
Creators: name: Traschen, Jennie
name: Fox, Daniel
Publisher: name: arXiv
Year: 2001
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider black-brane spacetimes that have at least one spatial translation Killing field that is tangent to the brane. A new parameter, the tension of a spacetime, is defined. The tension parameter is associated with spatial translations in much the same way that the ADM mass is associated with the time translation Killing field. In this work, we explore the implications of the spatial translation symmetry for small perturbations around a background black brane. For static charged black branes we derive a law which relates the tension perturbation to the surface gravity times the change in the the horizon area, plus terms that involve variations in the charges and currents. We find that as a black brane evaporates the tension decreases. We also give a simple derivation of a first law for black brane spacetimes. These constructions hold when the background stress-energy is governed by a Hamiltonian, and the results include arbitrary perturbative stress-energy sources.
description: 21 pages, o figures, harvmac
Elastic theory of icosahedral quasicrystals - application to straight dislocations
Creators: name: Ricker, M.
name: Bachteler, J.
name: Trebin, H. -R.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In quasicrystals, there are not only conventional, but also phason displacement fields and associated Burgers vectors. We have calculated approximate solutions for the elastic fields induced by two-, three- and fivefold straight screw- and edge-dislocations in infinite icosahedral quasicrystals by means of a generalized perturbation method. Starting from the solution for elastic isotropy in phonon and phason spaces, corrections of higher order reflect the two-, three- and fivefold symmetry of the elastic fields surrounding screw dislocations. The fields of special edge dislocations display characteristic symmetries also, which can be seen from the contributions of all orders.
description: 13 pages, 11 figures
Molecular analysis of a high-mass prestellar core candidate in W43-MM1
Creators: name: Molet, J.
name: Brouillet, N.
name: Nony, T.
name: Gusdorf, A.
name: Motte, F.
name: Despois, D.
name: Louvet, F.
name: Bontemps, S.
name: Herpin, F.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: High-mass analogues of low-mass prestellar cores are searched for to constrain the models of high-mass star formation. Several high-mass cores, at various evolutionary stages, have been recently identified towards the massive star-forming region W43-MM1 and amongst them a high-mass prestellar core candidate. We aim to characterise the chemistry in this high-mass prestellar core candidate, referred to as W43-MM1 core #6, and its environment. Using ALMA high-spatial resolution data of W43-MM1, we have studied the molecular content of core #6 and a neighbouring high-mass protostellar core, referred to as #3, which is similar in size and mass to core #6. We first subtracted the continuum emission using a method based on the density distribution of the intensities on each pixel. Then, from the distribution of detected molecules, we identified the molecules centred on the prestellar core candidate (core #6) and those associated to shocks related to outflows and filament formation. Then we constrained the column densities and temperatures of the molecules detected towards the two cores. While core #3 appears to contain a hot core with a temperature of about 190 K, core #6 seems to have a lower temperature in the range from 20 K to 90 K from a rotational diagram analysis. We have considered different source sizes for core #6 and the comparison of the abundances of the detected molecules towards the core with various interstellar sources shows that it is compatible with a core of size 1000 au with $T = 20-90$ K or a core of size 500 au with $T \sim 80$ K. Core #6 of W43-MM1 remains one of the best high-mass prestellar core candidates even if we cannot exclude that it is at the very beginning of the protostellar phase of high-mass star formation.
description: 18 pages, 8 figures, Accepted for publication in Astronomy & Astrophysics
A critique of non-extensive q-entropy for thermal statistics
Creators: name: Nauenberg, Michael
Publisher: name: arXiv
Year: 2002
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: During the past dozen years there have been numerous articles on a relation between entropy and probability which is non-additive and has a parameter $q$ that depends on the nature of the thermodynamic system under consideration. For $q=1$ this relation corresponds to the Boltzmann-Gibbs entropy, but for other values of $q$ it is claimed that it leads to a formalism which is consistent with the laws of thermodynamics. However, it is shown here that the joint entropy for systems having {\it different} values of $q$ is not defined in this formalism, and consequently fundamental thermodynamic concepts such as temperature and heat exchange cannot be considered for such systems. Moreover, for $q\ne 1$ the probability distribution for weakly interacting systems does not factor into the product of the probability distribution for the separate systems, leading to spurious correlations and other unphysical consequences, e.g. non-extensive energy, that have been ignored in various applications given in the literature.
Demotispa fuscocincta Sekerka 2014, comb. nov.
Creators: name: Sekerka, Lukáš
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Chrysomelidae
Demotispa
Demotispa fuscocincta

description: Demotispa fuscocincta (Spaeth, 1928) comb. nov.
 Himatidium fuscocinctum Spaeth, 1928: 32 (type locality: ‘ Rio Magdalena in Columbien’; ST! in BMNH!, MMUE!).
 Distribution. Colombia (SPAETH 1928).
description: Published as part of Sekerka, Lukáš, 2014, Review of Imatidiini genera (Coleoptera: Chrysomelidae: Cassidinae), pp. 257-314 in Acta Entomologica Musei Nationalis Pragae 54 (1) on page 295, DOI: 10.5281/zenodo.5301732
Non-autonomous Henon-Heiles system from Painleve class
Creators: name: Blaszak, Maciej
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We show how to deform separable Henon-Heiles system with isospectral Lax representation, related with the stationary flow of the $5th$-order KdV, to respective non-autonomous systems of Painleve type with isomonodromic Lax representation.
description: 5 pages
Full-3D relativistic MHD simulations of bow shock pulsar wind nebulae: emission and polarization
Creators: name: Olmi, B.
name: Bucciantini, N.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Bow shock pulsar wind nebulae are observed with a variety of complex morphologies at different wavelengths, most likely due to differences in the magnetic field strength and pulsar wind geometry. Here we present a detailed analysis, showing how these differences affect the observational properties in these systems, focusing on non-thermal synchrotron emission. By adopting different prescriptions for the local emissivity, on top of the magnetic and flow patterns taken from 3D high-resolution numerical simulations in relativistic MHD, and considering various viewing angles, we try to characterize the main features of the emission and polarization, to verify if and how these can be used to get information, or to put constraints, on known objects. We found for example that conditions leading to a strong development of the turbulence in the bow shock tail produce substantial differences in the emission pattern, especially in polarized light.
description: 12 pages, 15 figures
Building Contemporary Personal Narrative through Interpretation of Traditional Chinese Visual Culture
Creators: name: Cao, Bifei
Publisher: name: The Australian National University
Year: 2017
Subjects: Traditional Chinese visual culture
Cultural identity
Jewellery-based object

description: This PhD project explores how the negotiation of different cultures can be reinterpreted in visual form through jewellery-based object making. Through practice-led research, I have drawn from my childhood memories of traditional Chinese visual culture, combining them with images and material relating to the locations and cultures I have experienced in the present in order to explore personal identity through the shifting life experiences I have had in various locations in a multi-cultural environment. My aim has been to construct an experimental system of making that would allow me to express cultural identity through a negotiation of my original culture with other cultures. The result of my research is a series of jewellery-based and hollowware-based objects that explore precious metals and other materials such as plastic and milk powder. This inquiry locates itself within the field of jewellery and metalsmithing within the broader sphere of craft, arts and cultures.