cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Performance Impact of LoS and NLoS Transmissions in Dense Cellular Networks
Creators: name: Ding, Ming
name: Wang, Peng
name: Lopez-Perez, David
name: Mao, Guoqiang
name: Lin, Zihuai
Publisher: name: arXiv
Year: 2015
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this paper, we introduce a sophisticated path loss model incorporating both line-of-sight (LoS) and non-line-of-sight (NLoS) transmissions to study their impact on the performance of dense small cell networks (SCNs). Analytical results are obtained for the coverage probability and the area spectral efficiency (ASE), assuming both a general path loss model and a special case with a linear LoS probability function. The performance impact of LoS and NLoS transmissions in dense SCNs in terms of the coverage probability and the ASE is significant, both quantitatively and qualitatively, compared with the previous work that does not differentiate LoS and NLoS transmissions. Our analysis demonstrates that the network coverage probability first increases with the increase of the base station (BS) density, and then decreases as the SCN becomes denser. This decrease further makes the ASE suffer from a slow growth or even a decrease with network densification. The ASE will grow almost linearly as the BS density goes ultra dense. For practical regime of the BS density, the performance results derived from our analysis are distinctively different from previous results, and thus shed new insights on the design and deployment of future dense SCNs.
description: 32 pages, 8 figures, IEEE TWC [J]
Additional file 1 of Colonization of a hand washing sink in a veterinary hospital by an Enterobacter hormaechei strain carrying multiple resistances to high importance antimicrobials
Creators: name: Kanishka Kamathewatta
name: Bushell, Rhys
name: Fannana Rafa
name: Browning, Glenn
name: Billman-Jacobe, Helen
name: Marenda, Marc
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Evolutionary Biology
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: Ecology
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
subject: 60506 Virology

description: Additional file 1: Table S1. Sequencing read statistics after quality filtering. Table S2. Details on the genomes used to construct the phylogenetic tree.
Allele frequency of A385T in Fucosyltransferase 2 gene (FUT2)among Southern Thai population
Creators: name: Darinnat Buathong
name: Thanet Prajantasen
name: Theerakamol Pengsakul
Publisher: name: Research and Development Office, Prince of Songkla University
Year: 2020
Subjects: A385T
allele specific PCR
FUT2 gene
Southern Thai

description: Songklanakarin Journal of Science and Technology, 42, 5, 1021-1026
Direct observation of a dynamical glass transition in a nanomagnetic artificial Hopfield network
Creators: name: Saccone, Michael
name: Caravelli, Francesco
name: Hofhuis, Kevin
name: Parchenko, Sergii
name: Birkhölzer, Yorick A.
name: Dhuey, Scott
name: Kleibert, Armin
name: van Dijken, Sebastiaan
name: Nisoli, Cristiano
name: Farhan, Alan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Neural and Evolutionary Computing (cs.NE)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Spin glasses, generally defined as disordered systems with randomized competing interactions, are a widely investigated complex system. Theoretical models describing spin glasses are broadly used in other complex systems, such as those describing brain function, error-correcting codes, or stock-market dynamics. This wide interest in spin glasses provides strong motivation to generate an artificial spin glass within the framework of artificial spin ice systems. Here, we present the experimental realization of an artificial spin glass consisting of dipolar coupled single-domain Ising-type nanomagnets arranged onto an interaction network that replicates the aspects of a Hopfield neural network. Using cryogenic x-ray photoemission electron microscopy (XPEEM), we performed temperature-dependent imaging of thermally driven moment fluctuations within these networks and observed characteristic features of a two-dimensional Ising spin glass. Specifically, the temperature dependence of the spin glass correlation function follows a power law trend predicted from theoretical models on two-dimensional spin glasses. Furthermore, we observe clear signatures of the hard to observe rugged spin glass free energy in the form of sub-aging, out of equilibrium autocorrelations and a transition from stable to unstable dynamics.
description: Initial submission to Nature Physics. 20 pages, 4 figures
Thickness tunable quantum interference between surface phonon and Dirac plasmon states in thin-films of the topological insulator Bi2Se3
Creators: name: Glinka, Yuri D.
name: Babakiray, Sercan
name: Johnson, Trent A.
name: Lederman, David
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report on a >100-fold enhancement of Raman responses from Bi2Se3 thin films if laser photon energy switches from 2.33 eV (532 nm) to 1.58 eV (785 nm), which is due to direct optical coupling to Dirac surface states (SS) at the resonance energy of ~1.5 eV (a thickness-independent enhancement) and due to nonlinearly excited Dirac plasmon (a thickness-dependent enhancement). Owing to the direct optical coupling, we observed an in-plane phonon mode of hexagonally arranged Se-atoms associated with a continuous network of Dirac SS. This mode revealed a Fano lineshape for films <15 nm thick, resulting from quantum interference between surface phonon and Dirac plasmon states.
Fortification of iron in brownies with Sinlek brown rice flour
Creators: name: Foophow, Tita
name: Weerachon Phoohinkong
name: Pipat Lertkowit
name: Natthakarn Ketkoom
Publisher: name: Research and Development Office, Prince of Songkla University
Year: 2020
Subjects: Sinlek brown rice
iron fortification
brownies
flour mixes

description: Songklanakarin Journal of Science and Technology, 42, 5, 1027-1033
Towards Modeling Human Motor Learning Dynamics in High-Dimensional Spaces
Creators: name: Kamboj, Ankur
name: Ranganathan, Rajiv
name: Tan, Xiaobo
name: Srivastava, Vaibhav
Publisher: name: arXiv
Year: 2022
Subjects: subject: Systems and Control (eess.SY)
subject: Human-Computer Interaction (cs.HC)
subject: Robotics (cs.RO)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Designing effective rehabilitation strategies for upper extremities, particularly hands and fingers, warrants the need for a computational model of human motor learning. The presence of large degrees of freedom (DoFs) available in these systems makes it difficult to balance the trade-off between learning the full dexterity and accomplishing manipulation goals. The motor learning literature argues that humans use motor synergies to reduce the dimension of control space. Using the low-dimensional space spanned by these synergies, we develop a computational model based on the internal model theory of motor control. We analyze the proposed model in terms of its convergence properties and fit it to the data collected from human experiments. We compare the performance of the fitted model to the experimental data and show that it captures human motor learning behavior well.
description: accepted to "American Control Conference 2022"
title: Secure Infrastructures in the Realm of Decentralization
Creators: name: Das, Poulami
Publisher: name: UNSPECIFIED
Year: 2023

description: Most of today's online services such as e-commerce and online banking are based on centralized service providers, hence easily prone to single points of failure, cyber-attacks and censorship. An alternative approach to mitigate this issue, is to design decentralized systems, where the control is distributed among several entities, instead of a single centralized authority. A decentralized system often consists of a complex distribution of trust among different parties, or even organizations. Henceforth, it is often challenging to build a decentralized system. It is not surprising that security guarantees of such complex decentralized systems depend on several factors: not only conventional properties of data integrity, confidentiality and authentication, but also other relevant factors such as availability, accountability and authorization. In this thesis, we aim to build provably secure infrastructures that serves a decentralized system in one way or another. Our contribution is in three different settings of blockchain, byzantine agreement and cloud. Firstly, we consider the decentralized payment platform offered by blockchains. Although the core blockchain protocol has been thoroughly analyzed, the underling infrastructure of blockchain wallets is rather ad-hoc. Cryptocurrency wallets constitute an indispensable key management mechanism for every user that wants to send or receive blockchain payments. However, it lacks formal security analysis. We close this gap by designing provably secure wallets in presence of a classical as well as a quantum adversary. Through our security analysis, we provide concrete bit security achieved by BIP32 wallets, which is a wallet standardization deployed in many practical wallets. Interestingly, we observe that slightly modified yet equally efficient version of BIP32 achieves higher level of bit security than the original version. Secondly, we consider the problem of byzantine agreement (BA) – a fundamental problem in distributed computing as well as an important building block in the design of decentralized systems. Classically, byzantine agreement is known to be impossible without a public key infrastructure (PKI), in presence of a corruption threshold of
Study of CP asymmetry in B0-B0bar mixing with inclusive dilepton events
Creators: name: The BABAR Collaboration
name: Lees, J. P.
name: Others
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present a measurement of the asymmetry $A_{CP}$ between same-sign inclusive dilepton samples $\ell^+ \ell^+$ and $\ell^- \ell^-$ ($\ell= e, μ$) from semileptonic B decays in Y(4S) --> BBbar events, using the complete data set recorded by the BABAR experiment near the Y(4S) resonance, corresponding to 471 million BBbar pairs. The asymmetry A_{CP} allows comparison between the mixing probabilities P(B0bar --> B0) and P(B0 --> B0bar), and therefore probes CP and T violation. The result, $A_{CP} = (-3.9 \pm 3.5 (stat) \pm 1.9 (syst)) \times 10^{-3}$, is consistent with the Standard Model expectation.
description: 7 pages, 3 figures, submitted to Phys. Rev. Lett
Time-correlation functions for odd Langevin systems
Creators: name: Yasuda, Kento
name: Ishimoto, Kenta
name: Kobayashi, Akira
name: Lin, Li-Shing
name: Sou, Isamu
name: Hosaka, Yuto
name: Komura, Shigeyuki
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate the statistical properties of fluctuations in active systems that are governed by non-symmetric responses. Both an underdamped Langevin system with an odd resistance tensor and an overdamped Langevin system with an odd elastic tensor are studied. For a system in thermal equilibrium, the time-correlation functions should satisfy time-reversal symmetry and the anti-symmetric parts of the correlation functions should vanish. For the odd Langevin systems, however, we find that the anti-symmetric parts of the time-correlation functions can exist and that they are proportional to either the odd resistance coefficient or the odd elastic constant. This means that the time-reversal invariance of the correlation functions is broken due to the presence of odd responses in active systems. Using the short-time asymptotic expressions of the time-correlation functions, one can estimate an odd elastic constant of an active material such as an enzyme or a motor protein.
Plasma Concentrations of Short-Chain Fatty Acids in Active and Recovered Anorexia Nervosa
Creators: name: Lavebratt, C.
name: Bulik, C.M.
name: Landén, M.
name: Nilsson, I.A.K.
name: Xu, J.
name: Landberg, R.
Publisher: name: MDPI
Year: 2022

description: Anorexia nervosa (AN) is one of the most lethal psychiatric disorders. To date, we lack adequate knowledge about the (neuro)biological mechanisms of this disorder to inform evidence-based pharmacological treatment. Gut dysbiosis is a trending topic in mental health, including AN. Communication between the gut microbiota and the brain is partly mediated by metabolites produced by the gut microbiota such as short-chain fatty acids (SCFA). Previous research has suggested a role of SCFA in weight regulation (e.g., correlations between specific SCFA-producing bacteria and BMI have been demonstrated). Moreover, fecal SCFA concentrations are reported to be altered in active AN. However, data concerning SCFA concentrations in individuals who have recovered from AN are limited. In the present study, we analyzed and compared the plasma concentrations of seven SCFA (acetic-, butyric-, formic-, isobutyric-, isovaleric-, propionic-, and succinic acid) in females with active AN (n = 109), recovered from AN (AN-REC, n = 108), and healthy-weight age-matched controls (CTRL, n = 110), and explored correlations between SCFA concentrations and BMI. Significantly lower plasma concentrations of butyric, isobutyric-, and isovaleric acid were detected in AN as well as AN-REC compared with CTRL. We also show significant correlations between plasma concentrations of SCFA and BMI. These results encourage studies evaluating whether interventions directed toward altering gut microbiota and SCFA could support weight restoration in AN.
Global divergent trends of algal blooms detected by satellite during 1982–2018
Creators: name: Shang, Y.
name: Paerl, H.W.
name: Yang, Q.
name: Lyu, Y.
name: Liu, G.
name: Cheng, S.
name: Jacinthe, P.-A.
name: Xu, X.
name: Duan, H.
name: Fang, C.
name: Li, S.
name: Wen, Z.
name: Lyu, L.
name: Kutser, T.
name: Shi, K.
name: Tao, H.
name: Wang, Z.
name: Mao, D.
name: Lyu, D.
name: Zhang, B.
name: Song, K.
Publisher: name: John Wiley and Sons Inc
Year: 2022

description: Algal blooms (ABs) in inland lakes have caused adverse ecological effects, and health impairment of animals and humans. We used archived Landsat images to examine ABs in lakes (>1 km2) around the globe over a 37-year time span (1982–2018). Out of the 176032 lakes with area >1 km2 detected globally, 863 were impacted by ABs, 708 had sufficiently long records to define a trend, and 66% exhibited increasing trends in frequency ratio (FRQR, ratio of the number of ABs events observed in a year in a given lake to the number of available Landsat images for that lake) or area ratio (AR, ratio of annual maximum area covered by ABs observed in a lake to the surface area of that lake), while 34% showed a decreasing trend. Across North America, an intensification of ABs severity was observed for FRQR (p<.01) and AR (p <.01) before 1999, followed by a decrease in ABs FRQR (p <.01) and AR (p <.05) after the 2000s. The strongest intensification of ABs was observed in Asia, followed by South America, Africa, and Europe. No clear trend was detected for the Oceania. Across climatic zones, the contributions of anthropogenic factors to ABs intensification (16.5% for fertilizer, 19.4% for gross domestic product, and 18.7% for population) were slightly stronger than climatic drivers (10.1% for temperature, 11.7% for wind speed, 16.8% for pressure, and for 11.6% for rainfall). Collectively, these divergent trends indicate that consideration of anthropogenic factors as well as climate change should be at the forefront of management policies aimed at reducing the severity and frequency of ABs in inland waters.
Devitalizing noise-driven instability of entangling logic in silicon devices with bias controls
Creators: name: Ryu, Hoon
name: Kang, Ji-Hoon
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The quality of quantum bits (qubits) in silicon is highly vulnerable to charge noise that is omni-present in semiconductor devices and is in principle hard to be suppressed. For a realistically sized quantum dot system based on a silicon-germanium heterostructure whose confinement is manipulated with electrical biases imposed on top electrodes, we computationally explore the noise-robustness of 2-qubit entangling operations with a focus on the controlled-X (CNOT) logic that is essential for designs of gate-based universal quantum logic circuits. With device simulations based on the physics of bulk semiconductors augmented with electronic structure calculations, we not only quantify the degradation in fidelity of single-step CNOT operations with respect to the strength of charge noise, but also discuss a strategy of device engineering that can significantly enhance noise-robustness of CNOT operations with almost no sacrifice of speed compared to the single-step case. Details of device designs and controls that this work presents can establish a rare but practical guideline for potential efforts to secure silicon-based quantum processors using an electrode-driven quantum dot platform.
description: 23 pages, 6 figures
Summary of Information Theoretic Quantities
Creators: name: Ince, Robin A. A.
name: Panzeri, Stefano
name: Schultz, Simon R.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: Information theory is a practical and theoretical framework developed for the study of communication over noisy channels. Its probabilistic basis and capacity to relate statistical structure to function make it ideally suited for studying information flow in the nervous system. As a framework it has a number of useful properties: it provides a general measure sensitive to any relationship, not only linear effects; its quantities have meaningful units which in many cases allow direct comparison between different experiments; and it can be used to study how much information can be gained by observing neural responses in single experimental trials, rather than in averages over multiple trials. A variety of information theoretic quantities are in common use in neuroscience - including the Shannon entropy, Kullback-Leibler divergence, and mutual information. In this entry, we introduce and define these quantities. Further details on how these quantities can be estimated in practice are provided in the entry "Estimation of Information-Theoretic Quantities" and examples of application of these techniques in neuroscience can be found in the entry "Applications of Information-Theoretic Quantities in Neuroscience".
description: 7 pages
Stability and symmetry breaking in the general n-Higgs-doublet model
Creators: name: Maniatis, M.
name: Nachtmann, O.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: For potentials with n-Higgs-boson doublets stability, electroweak symmetry breaking, and the stationarity equations are discussed in detail. This is done within the bilinear formalism which simplifies the investigation, in particular since irrelevant gauge degrees of freedom are systematically avoided. For the case that the potential leads to the physically relevant electroweak symmetry breaking the mass matrices of the physical Higgs bosons are given explicitly.
description: 12 pages, generalization of the case of 3 doublets in arXiv:1408.6833 to the case of n doublets. Revised version with errors corrected with respect to the stability and stationarity equations for the case of the bilinear's matrix of rank 1
Additional file 1 of The effects of financial incentives on diabetes prevention program attendance and weight loss among low-income patients: the We Can Prevent Diabetes cluster-randomized controlled trial
Creators: name: Desai, Jay R.
name: Vazquez-Benitez, Gabriela
name: Taylor, Gretchen
name: Johnson, Sara
name: Anderson, Julie
name: Garrett, Joyce E.
name: Gilmer, Todd
name: Houa Vue-Her
name: Rinn, Sarah
name: Engel, Katelyn
name: Schiff, Jeff
name: O’Connor, Patrick J.
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1.
Approximate Noether Symmetries from Lagrangian for Plane Symmetric Spacetimes
Creators: name: Ali, Farhad
name: Feroze, Tooba
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Noether symmetries from geodetic Lagrangian for time-conformal plane symmetric spacetime are presented. Here, time conformal factor is used to find the approximate Noether symmetries. This is a generalization of the idea discussed by I. Hussain and A. Noether symmetries from geodetic Lagrangian for time-conformal plane symmetric spacetime are presented. Here, time conformal factor is used to find the approximate Noether symmetries. This is a generalization of the idea discussed by I. Hussain and A. Qadir [3,4], where they obtained approximate Noether symmetries from Lagrangian for a particular plane symmetric static spacetime. In the present article, the most general plane symmetric static spacetime is considered and perturb it by introducing a general time conformal factor $e^{εf(t)}$, where $ε$ is very small which causes the perturbation in the spacetime. Taking the perturbation up to the first order, we find all Lagrangian for plane symmetric spactimes from which approximate Noether symmetries exist. PACS 11.30.-j-Symmetries and conservation laws PACS 04.20.-q-Classical general Relativity
Quench dynamics of noninteracting fermions with a delta impurity
Creators: name: Gouraud, Gabriel
name: Doussal, Pierre Le
name: Schehr, Gregory
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study the out-of-equilibrium dynamics of noninteracting fermions in one dimension and in continuum space, in the presence of a delta impurity potential at the origin whose strength $g$ is varied at time $t=0$. The system is prepared in its ground state with $g=g_0=+\infty$, with two different densities and Fermi wave-vectors $k_L$ and $k_R$ on the two half-spaces $x>0$ and $x<0$ respectively. It then evolves for $t>0$ as an isolated system, with a finite impurity strength $g$. We compute exactly the time dependent density and current. For a fixed position $x$ and in the large time limit $t \to \infty$, the system reaches a non-equilibrium stationary state (NESS). We obtain analytically the correlation kernel, density, particle current, and energy current in the NESS, and characterize their relaxation, which is algebraic in time. In particular, in the NESS, we show that, away from the impurity, the particle density displays oscillations which are the non-equilibrium analog of the Friedel oscillations. In the regime of "rays", $x/t=ξ$ fixed with $x, t \to \infty$, we compute the same quantities and observe the emergence of two light cones, associated to the Fermi velocities $k_L$ and $k_R$ in the initial state. Interestingly, we find non trivial quantum correlations between two opposite rays with velocities $ξ$ and $-ξ$ which we compute explicitly. We extend to a continuum setting and to a correlated initial state the analytical methods developed in a recent work of Ljubotina, Sotiriadis and Prosen, in the context of a discrete fermionic chain with an impurity. We also generalize our results to an initial state at finite temperature, recovering, via explicit calculations, some predictions of conformal field theory in the low energy limit.
description: 57 pages, 12 figures. References as well as a discussion on GGE added
The eigSUMR inverter for overlap fermion
Creators: name: Cundy, Nigel
name: Lee, Weonjong
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We discuss the usage and applicability of deflation methods for the overlap lattice Dirac operator, focussing on calculating the eigenvalues using a method similar to the eigCG algorithm used for other Dirac operators. The overlap operator, which contains several theoretical advantages over other formulations of lattice Quantum Chromodynamics, is more computationally expensive because it requires the computation of the matrix sign function. The principle change made compared to deflation methods for other formulations of lattice QCD is that it is necessary for best performance to tune or relax the accuracy of the matrix sign function as the computation proceeds. We adapt the eigCG algorithm for two inversion algorithms for overlap fermions, GMRESR(relCG) and GMRESR(relSUMR). Before deflation, the rate of convergence of these routines in terms of iterations is similar, but, since the Shifted Unitary Minimal Residual (SUMR) algorithm only requires one call to the matrix sign function compared to the two calls required for Conjugate Gradient (CG), SUMR is usually preferred for single inversions of the Dirac operator. We construct bounds for the required accuracy of the matrix sign function during the eigenvalue calculation. For the SUMR algorithm, we use a Galerkin projection to perform the deflation; while for the CG algorithm, we are able to use a considerably superior spectral pre-conditioner. The superior performance of the spectral preconditioner, and its need for less accurate eigenvalues, almost erodes SUMR's advantage over CG as an inversion algorithm. We see factor of three gains for the inversion algorithm from the deflation on our small test lattices. There is, however, a significant cost in the eigenvalue calculation because we cannot relax the accuracy of the matrix sign function as aggressively when calculating the eigenvalues as we do while performing the inversions.
The scaling of entanglement entropy in a honeycomb lattice on a torus
Creators: name: You, Wen-Long
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The entanglement entropy of a noninteracting fermionic system confined to a two-dimensional honeycomb lattice on a torus is calculated. We find that the entanglement entropy can characterize Lifshitz phase transitions without a local order parameter. In the noncritical phase and critical phase with a nodal Fermi surface, the entanglement entropy satisfies an area law. The leading subarea term is a constant in the gapped phase rather than a logarithmic additive term in the gapless regime. The tuning of chemical potential allows for a nonzero Fermi surface, whose variation along a particular direction determines a logarithmic violation of the area law. We perform the scaling of entanglement entropy numerically and find agreement between the analytic and numerical results. Furthermore, we clearly show that an entanglement spectrum is equivalent to an edge spectrum.
description: 16 pages, 12 figures
Two-colour spectrally multimode integrated SU(1,1) interferometer
Creators: name: Ferreri, Alessandro
name: Sharapova, Polina R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Multimode integrated interferometers have great potential for both spectral engineering and metrological applications. However, material dispersion of integrated platforms constitutes an obstacle which limits the performance and precision of such interferometers. At the same time, two-colour non-linear interferometers present an important tool for metrological applications, when measurements in a certain frequency range are difficult. In this manuscript, we theoretically develop and investigate an integrated multimode two-colour SU(1,1) interferometer that operates in a supersensitive mode. By ensuring a proper design of the integrated platform, we suppress dispersion and thereby significantly increase the visibility of the interference pattern. We demonstrate that such an interferometer overcomes the classical phase sensitivity limit for wide parametric gain ranges, when up to $3*10^4$ photons are generated.
Spin Supersolidity in Nearly Ideal Easy-axis Triangular Quantum Antiferromagnet Na$_2$BaCo(PO$_4$)$_2$
Creators: name: Gao, Yuan
name: Fan, Yu-Chen
name: Li, Han
name: Yang, Fan
name: Zeng, Xu-Tao
name: Sheng, Xian-Lei
name: Zhong, Ruidan
name: Qi, Yang
name: Wan, Yuan
name: Li, Wei
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Prototypical models and their material incarnations are cornerstones to the understanding of quantum magnetism. Here we show theoretically that the recently synthesized magnetic compound Na$_2$BaCo(PO$_4$)$_2$ (NBCP) is a rare, nearly ideal material realization of the $S=1/2$ triangular-lattice antiferromagnet with significant easy-axis spin exchange anisotropy. By combining the automatic parameter searching and tensor-network simulations, we establish a microscopic model description of this material with realistic model parameters, which can not only fit well the experimental thermodynamic data but also reproduce the measured magnetization curves without further adjustment of parameters. According to the established model, the NBCP hosts a spin supersolid state that breaks both the lattice translation symmetry and the spin rotational symmetry. Such a state is a spin analogue of the long-sought supersolid state, thought to exist in solid Helium and optical lattice systems, and share similar traits. The NBCP therefore represents an ideal material-based platform to explore the physics of supersolidity as well as its quantum and thermal melting.
description: 17 pages, 10 figures
Reassessing the formation of the Inner Oort cloud in an embedded star cluster II: Probing the inner edge
Creators: name: Brasser, R.
name: Schwamb, M. E.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The detached object Sedna is likely at the inner edge of the Oort cloud, more precisely the inner Oort cloud (IOC). Until recently it was the sole member of this population. The recent discovery of the detached object 2012 VP113 has confirmed that there should be more objects in this region. Three additional IOC candidates with orbits much closer to Neptune have been proposed in the past decade since Sedna's discovery: 2000 CR105, 2004 VN112 and 2010 GB174. Sedna and 2012 VP113 have perhelia near 80 AU and semi-major axes over 250 AU. The latter three have perihelia between 44 AU and 50 AU and semi-major axes between 200 AU and 400 AU. Here we determine whether the latter three objects belong to the IOC or are from the Kuiper Belt's Extended Scattered Disc (ESD) using numerical simulations. We assume that the IOC was formed when the Sun was in its birth cluster. We analyse the evolution of the IOC and the Scattered Disc (SD) during an episode of late giant planet migration. We examine the impact of giant planet migration in the context of four and five planets. We report that the detached objects 2004 VN112 and 2010 GB174 are likely members of the IOC that were placed there while the Sun was in its birth cluster or during an episode of Solar migration in the Galaxy. The origin of 2000 CR105 is ambiguous but it is likely it belongs to the ESD. Based on our simulations we find that the maximum perihelion distance of SD objects is 41 AU when the semi-major axis is higher than 250 AU. Objects closer in are subject to mean motion resonances with Neptune that may raise their perihelia. The five planet model yields the same outcome. We impose a conservative limit and state that all objects with perihelion distance q>45 AU and semi-major axis a>250 AU belong to the inner Oort cloud.
description: Accepted for publication in Monthly Notices of the Royal Astronomical Society
On rational functions with monodromy group $M_{11}$
Creators: name: König, Joachim
Publisher: name: arXiv
Year: 2015
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 12Y05, 12F12, 11R09, 11R29

description: We compute new polynomials with Galois group $M_{11}$ over $\mathbb{Q}(t)$. These polynomials stem from various families of covers of $\mathbb{P}^1\mathbb{C}$ ramified over at least 4 points. Each of these families has features that make a detailed study interesting. Some of the polynomials lead, via specialization, to number fields with very small discriminant or few ramified primes.
description: 11 pages
Three-dimensional quantum cellular automata from chiral semion surface topological order and beyond
Creators: name: Shirley, Wilbur
name: Chen, Yu-An
name: Dua, Arpit
name: Ellison, Tyler D.
name: Tantivasadakarn, Nathanan
name: Williamson, Dominic J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We construct a novel three-dimensional quantum cellular automaton (QCA) based on a system with short-range entangled bulk and chiral semion boundary topological order. We argue that either the QCA is nontrivial, i.e. not a finite-depth circuit of local quantum gates, or there exists a two-dimensional commuting projector Hamiltonian realizing the chiral semion topological order (characterized by $U(1)_2$ Chern-Simons theory). Our QCA is obtained by first constructing the Walker-Wang Hamiltonian of a certain premodular tensor category of order four, then condensing the deconfined bulk boson at the level of lattice operators. We show that the resulting Hamiltonian hosts chiral semion surface topological order in the presence of a boundary and can be realized as a non-Pauli stabilizer code on qubits, from which the QCA is defined. The construction is then generalized to a class of QCAs defined by non-Pauli stabilizer codes on ${2^n}$-dimensional qudits that feature surface anyons described by $U(1)_{2^n}$ Chern-Simons theory. Our results support the conjecture that the group of nontrivial three-dimensional QCAs is isomorphic to the Witt group of non-degenerate braided fusion categories.
description: 17+8 pages, 8 figures
Moiré Landau fans and magic zeros
Creators: name: Paul, Nisarga
name: Crowley, Philip J. D.
name: Devakul, Trithep
name: Fu, Liang
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the energy spectrum of moiré systems under a uniform magnetic field. The superlattice potential generally broadens Landau levels into Chern bands with finite bandwidth. However, we find that these Chern bands become flat at a discrete set of magnetic fields which we dub "magic zeros". The flat band subspace is generally different from the Landau level subspace in the absence of the moiré superlattice. By developing a semiclassical quantization method and taking account of superlattice induced Bragg reflection, we prove that magic zeros arise from the simultaneous quantization of two distinct $k$-space orbits. The flat bands at magic zeros provide a new setting for exploring crystalline fractional quantum Hall physics.
description: 5+4 pages; version to appear in PRL
Purity of thermal mixed quantum states
Creators: name: Iwaki, Atsushi
name: Hotta, Chisa
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We develop a formula to evaluate the purity of a series of thermal equilibrium states that can be calculated in numerical experiments without knowing the exact form of the quantum state \textit{a priori}. Canonical typicality guarantees that there are numerous microscopically different expressions of such states, which we call thermal mixed quantum (TMQ) states. Suppose that we construct a TMQ state by a mixture of $N_\mathrm{samp}$ independent pure states. The weight of each pure state is given by its norm, and the partition function is given by the average of the norms. To qualify how efficiently the mixture is done, we introduce a quantum statistical quantity called "normalized fluctuation of partition function (NFPF)". For smaller NFPF, the TMQ state is closer to the equally weighted mixture of pure states, which means higher efficiency, requiring a smaller $N_\mathrm{samp}$. The largest NFPF is realized in the Gibbs state with purity-0 and exponentially large $N_\mathrm{samp}$, while the smallest NFPF is given for thermal pure quantum state with purity-1 and $N_\mathrm{samp}=1$. The purity is formulated using solely the NFPF and roughly gives $N_\mathrm{samp}^{-1}$. Our analytical results are numerically tested and confirmed by the two random sampling methods built on matrix-product-state-based wave functions.
description: 20 pages, 9 figures
Characterizing host-virus interactions through host factor curation and network analysis
Creators: name: Nesdoly, Sean
name: Sharon, David
name: Kamen, Amine
name: Xia, Yu
Publisher: name: F1000 Research Limited
Year: 2023

description: The biomolecular interactions that take place between a virus and its host are complex in nature and play a significant role in governing functional and evolutionary dynamics. Moreover, the mechanics by which viruses infect, replicate, and otherwise impact its host varies across individuals, species, and between generations. Therefore, determining what interactions occur, how they evolve, and their importance in the context of the cellular interactome is of significant value and has yet to be fully established.

 To this end, a systems biology approach has been taken to elucidate a comprehensive set of human-influenza genetic and functional interactions. Host genes were curated from the literature and classified, with varying degrees of confidence based on the nature of the interaction, as either being essential for or acting against viral propagation. These were then used as a framework to investigate the human interactome, wherein various biological properties and functional relationships were discovered. From this, a set of antiviral genes has been identified as potential targets for knocking out as a way to increase viral titres in cell-based vaccine manufacturing platforms. This study also extends the knowledgebase for proviral genes, which may be used to develop more effective treatments against viral infection.
Sensitivity of ultracold atoms to quantized flux in a superconducting ring
Creators: name: Weiss, P.
name: Knufinke, M.
name: Bernon, S.
name: Bothner, D.
name: Sárkány, L.
name: Zimmermann, C.
name: Kleiner, R.
name: Koelle, D.
name: Fortágh, J.
name: Hattermann, H.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We report on the magnetic trapping of an ultracold ensemble of $^{87}$Rb atoms close to a superconducting ring prepared in different states of quantized magnetic flux. The niobium ring of 10 $μ$m radius is prepared in a flux state $n Φ_0$, with $Φ_0 = h / 2e$ the flux quantum and $n$ varies between $\pm 5$. An atomic cloud of 250 nK temperature is positioned with a harmonic magnetic trapping potential at $\sim 18 μ$m distance below the ring. The inhomogeneous magnetic field of the supercurrent in the ring contributes to the magnetic trapping potential of the cloud. The induced deformation of the magnetic trap impacts the shape of the cloud, the number of trapped atoms as well as the center-of-mass oscillation frequency of Bose-Einstein condensates. When the field applied during cooldown of the chip is varied, the change of these properties shows discrete steps that quantitatively match flux quantization.
description: 5 pages, 4 figures
Local Brownian motions
Creators: name: EDUARD BICHE
Publisher: name: Monash University
Year: 2020
Subjects: subject: 10406 Stochastic Analysis and Modelling
subject: FOS: Mathematics
subject: 10205 Financial Mathematics

description: In this thesis, stochastic processes closely related to a prominent process called Brownian motion is introduced. The processes are called local Brownian motions. Two rich families are constructed, which can be used to model stochastic dynamical systems in such fields as finance, biology, and physics. Stochastic calculus with respect to local Brownian motion is developed, and strong solutions are presented for some stochastic differential equations driven by the noise generated by local Brownian motions.
Exciton condensation in quantum wells. Exciton hydrodynamics. The effect of localized states
Creators: name: Sugakov, V. I.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The hydrodynamic equations for indirect excitons in the double quantum wells are studied taking into account 1) a possibility of an exciton condensed phase formation, 2) the presence of pumping, 3) finite value of the exciton lifetime, 4) exciton scattering by defects. The threshold pumping emergence of the periodical exciton density distribution is found. The role of localized and free exciton states is analyzed in the formation of emission spectra.
description: 10 pages, 4 figurees; this article is a shortened version of arXiv:1306.4876 published in Condensed Matter Physics
Evolutionary Resilience for Kelp: Prospects and Challenges Workshop Report, Monterey Bay Aquarium, May 22, 2024
Creators: name: Pinsky, Malin
name: Ridlon, April D.
name: Elsmore, Kristen
name: Freiwald, Jan
name: Lonhart, Steve I.
name: Balstad, Laurinne
name: L. Baskett, Marissa
name: Colton, Madhavi A.
name: David, Aimee
name: Miller, Rebecca Flores
name: Giraldo-Ospina, Anita
name: Hayford, Hilary A.
name: Kappel, Carrie V.
name: Nickols, Kerry J.
name: T. Raimondi, Peter
name: Roberts, Roy
name: Zeff, Maya
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 319902
subject: Global change biology
classificationCode: 410401
subject: Conservation and biodiversity
classificationCode: 310406
subject: Evolutionary impacts of climate change

description: This is the report from a workshop convened to bridge the gap between research and application of evolutionary resilience concepts for kelp. The lead conveners were Malin Pinsky (University of California Santa Cruz) and April Ridlon (Monterey Bay Aquarium). The intended outcomes were to:Explore the potential for evolutionary resilience to assist kelp management Inform California’s Kelp Restoration and Management Plan (KRMP)Build relationships between researchers and practitioners that could expand efforts to understand and apply evolutionary resilience concepts for kelp
Towards AutoQML: A Cloud-Based Automated Circuit Architecture Search Framework
Creators: name: Gómez, Raúl Berganza
name: O'Meara, Corey
name: Cortiana, Giorgio
name: Mendl, Christian B.
name: Bernabé-Moreno, Juan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Emerging Technologies (cs.ET)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The learning process of classical machine learning algorithms is tuned by hyperparameters that need to be customized to best learn and generalize from an input dataset. In recent years, Quantum Machine Learning (QML) has been gaining traction as a possible application of quantum computing which may provide quantum advantage in the future. However, quantum versions of classical machine learning algorithms introduce a plethora of additional parameters and circuit variations that have their own intricacies in being tuned. In this work, we take the first steps towards Automated Quantum Machine Learning (AutoQML). We propose a concrete description of the problem, and then develop a classical-quantum hybrid cloud architecture that allows for parallelized hyperparameter exploration and model training. As an application use-case, we train a quantum Generative Adversarial neural Network (qGAN) to generate energy prices that follow a known historic data distribution. Such a QML model can be used for various applications in the energy economics sector.
description: 8 pages, to appear in QSA 2022 (IEEE ICSA 2022)
Discordant morphological and genetic pattern in Leptobrachiumhendricksoni (Anura: Megophryidae) from southern Thailand, revealedby non-parametric ANOVA with Monte Carlo simulations
Creators: name: Dra?Ki?, Gordon
name: V?R?S, Judit
name: Sansareeya Wangkulangkul
name: Marko ?Uraki?
Publisher: name: Research and Development Office, Prince of Songkla University
Year: 2020
Subjects: Megophryidae
southern Thailand
morphometric analyses
np-ANOVA
Monte Carlo simulations

description: Songklanakarin Journal of Science and Technology, 42, 5, 1034-1044
Metric Gauge Fields in Deformed Special Relativity
Creators: name: Cardone, F.
name: Mignani, R.
name: Petrucci, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: We show that, in the framework of Deformed Special Relativity (DSR), namely a (four-dimensional) generalization of the (local) space-time struc- ture based on an energy-dependent "deformation" of the usual Minkowski geometry, two kinds of gauge symmetries arise, whose spaces either coin- cide with the deformed Minkowski space or are just internal spaces to it. This is why we named them "metric gauge theories". In the case of the internal gauge fields, they are a consequence of the deformed Minkowski space (DMS) possessing the structure of a generalized Lagrange space. Such a geometrical structure allows one to define curvature and torsion in the DMS.
description: 20 pages, 1 figure