cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Forecasting constraints on the mean free path of ionizing photons at $z \geq 5.4$ from the Lyman-$α$ forest flux auto-correlation function
Creators: name: Wolfson, Molly
name: Hennawi, Joseph F.
name: Davies, Frederick B.
name: Oñorbe, Jose
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Fluctuations in Lyman-$α$ (Ly$α$) forest transmission towards high-$z$ quasars are partially sourced from spatial fluctuations in the ultraviolet background (UVB), the level of which are set by the mean free path of ionizing photons ($λ_{\text{mfp}}$). The auto-correlation function of Ly$α$ forest flux characterizes the strength and scale of transmission fluctuations and, as we show, is thus sensitive to $λ_{\text{mfp}}$. Recent measurements at $z \sim 6$ suggest a rapid evolution of $λ_{\text{mfp}}$ at $z>5.0$ which would leave a signature in the evolution of the auto-correlation function. For this forecast, we model mock Ly$α$ forest data with properties similar to the XQR-30 extended data set at $5.4 \leq z \leq 6.0$. At each $z$ we investigate 100 mock data sets and an ideal case where mock data matches model values of the auto-correlation function. For ideal data with $λ_{\text{mfp}}=9.0$ cMpc at $z=6.0$, we recover $λ_{\text{mfp}}=12^{+6}_{-3}$ cMpc. This precision is comparable to direct measurements of $λ_{\text{mfp}}$ from the stacking of quasar spectra beyond the Lyman limit. Hypothetical high-resolution data leads to a $\sim40\%$ reduction in the error bars over all $z$. The distribution of mock values of the auto-correlation function in this work is highly non-Gaussian for high-$z$, which should caution work with other statistics of the high-$z$ Ly$α$ forest against making this assumption. We use a rigorous statistical method to pass an inference test, however future work on non-Gaussian methods will enable higher precision measurements.
description: Accepted for publication in MNRAS, 16 pages, 11 figures
title: Digital Twin based feedback control of biomass specific rates in a Fab-fragment producing E. coli fed-batch process
Creators: name: Horst, Nora-Sophie
Publisher: name: TU Wien
Year: 2022
Subjects: subject: fed-batch process
subject: bioprocess control
subject: recombinant protein production
subject: feedback linearization
subject: generic model
subject: biomass specific rates
subject: digital twin

description: To ensure stable product quality and batch to batch reproducibility of fermentation processes, bioprocess control is the matter of choice. A majority of recombinant protein production processes are carried out in fed-batch mode, which enables control by the feed addition. Models are needed for the establishment and the investigation of more complex control objectives as a representation of the real process. These models could be extendedto applicable Digital Twins if they are integrated in the monitoring and control loop of the fermentation plant.The aim of the thesis is to find control laws to keep biomass specific rates of a recombinant protein producing E.coli fed-batch process constant and investigate the impacts and the usability of this new control approaches. Therefore an already existing process model was extended and fitted to historical datasets. Subsequently the model was used to carry out a nonlinear feedback linearization to obtain the demanded control laws. In addition to thewell known and often used control of the specific growth rate control laws were derived to control the biomass specific substrate uptake rate, the recombinant protein production rate as well as the biomass specific oxygen uptake and carbon dioxide production rate.To judge the applicability of these control laws an implementation study was carried out. Therefore an independent verification plant was simulated as a substitute for real experiments. To apply the control laws in a meaningful way a setpoint optimization was performed beforehand and the controllers were tuned.The control laws could successfully be used to keep the biomass specific rates at constant setpoints. Additionally the implementation study showed an theoretical potential to improve process performance using the determined optimized setpoints. Eventually the potential to apply this novel control approaches and the model to real experiments is discussed with regard to an applicable digital twin.
Bottomonium sequential suppression and strong heavy-quark potential in heavy-ion collisions
Creators: name: Wen, Liuyuan
name: Chen, Baoyi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We employ the time-dependent Schrödinger equation with different complex potentials to study the bottomonium sequential suppression in Pb-Pb collisions at $\sqrt{s_{NN}}=2.76$ TeV and 5.02 TeV and Au-Au collisions at $\sqrt{s_{NN}}=200$ GeV. Both color screening effect and the random scatterings with thermal partons are considered in the real and imaginary parts of the heavy-quark potentials. As the real part of the heavy-quark potential is between the free energy $F(T,r)$ and the internal energy $U(T,r)$ of heavy quarkonium, we parametrize different potentials with a function of $F$ and $U$ to evolve the bottomonium wave packages in the medium. We find that when the real part of the potential is close to $U(T,r)$, it can explain well the pattern of bottomonium sequential suppression where their nuclear modification factors satisfy the relation $R_{AA}(1s)>R_{AA}(2s)>R_{AA}(3s)$ observed in experiments. In the other limit of $F(T,r)$, bottomonium wave packages tend to expand due to weak attracted force, which results in evident transitions from $Υ(2s)$ to $Υ(3s)$ components and does not satisfy the sequential suppression pattern. We suggest that the bottomonium sequential suppression can be a probe of strong heavy-quark potential in the medium.
description: 8 pages, 27 figures
PINION: Physics-informed neural network for accelerating radiative transfer simulations for cosmic reionization
Creators: name: Korber, Damien
name: Bianco, Michele
name: Tolley, Emma
name: Kneib, Jean-Paul
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: With the advent of the Square Kilometre Array Observatory (SKAO), scientists will be able to directly observe the Epoch of Reionization by mapping the distribution of neutral hydrogen at different redshifts. While physically motivated results can be simulated with radiative transfer codes, these simulations are computationally expensive and can not readily produce the required scale and resolution simultaneously. Here we introduce the Physics-Informed neural Network for reIONization (PINION), which can accurately and swiftly predict the complete 4-D hydrogen fraction evolution from the smoothed gas and mass density fields from pre-computed N-body simulation. We trained PINION on the C$^2$-Ray simulation outputs and a physics constraint on the reionization chemistry equation is enforced. With only five redshift snapshots and a propagation mask as a simplistic approximation of the ionizing photon mean free path, PINION can accurately predict the entire reionization history between $z=6$ and $12$. We evaluate the accuracy of our predictions by analysing the dimensionless power spectra and morphology statistics estimations against C$^2$-Ray results. We show that while the network's predictions are in good agreement with simulation to redshift $z>7$, the network's accuracy suffers for $z<7$ primarily due to the oversimplified propagation mask. We motivate how PINION performance can be drastically improved and potentially generalized to large-scale simulations.
description: 15 pages, 15 figures, 1 table
What is the distance to the CMB?
Creators: name: Clarkson, Chris
name: Umeh, Obinna
name: Maartens, Roy
name: Durrer, Ruth
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The success of precision cosmology depends not only on accurate observations, but also on the theoretical model - which must be understood to at least the same level of precision. Subtle relativistic effects can lead to biased measurements if they are neglected. One such effect gives a systematic shift in the distance-redshift relation away from its background value, due to the non- linear relativistic conservation of total photon flux. We also show directly how this shift follows from a fully relativistic analysis of the geodesic deviation equation. We derive the expectation value of the shift using second-order perturbations about a concordance background, and show that the distance to last scattering is increased by 1%. We argue that neglecting this shift could lead to a significant bias in the background cosmological parameters, because it alters the meaning of the background model. A naive adjustment of CMB parameter estimation if this shift is really a correction to the background would raise the H0 value inferred from the CMB by 5%, potentially removing the tension with local measurements of H0. Other CMB parameters which depend on the distance would also be shifted by ~1sigma when combined with local H0 data. While our estimations rely on a simplistic analysis, they nevertheless illustrate that accurately defining the background model in terms of the expectation values of observables is critical when we aim to determine the model parameters at the sub-percent level.
description: 15 pages, 3 figures. v3 is the version to appear in JCAP
Análisis armónico de datos de corrientes en la region nortedel Golfo de California de noviembre de 1994 a febrero de 1996 /
Creators: name: Ramírez Manguilar, Ana Maria
Publisher: name: Universidad Autónoma de Baja California.
Year: 2022
Subjects: subject: Corrientes oceánicas México California, Golfo de||Oceanología Física Tésis
subject: GC281 .C3 R35 2000

description: Se obtuvieron las elipses de mareas de datos de corriente mediante analisis armonico, muestreados en 26 anclajes colocados en diferentes localidades de la region Norte del Golfo de California, durante el periodo de noviembre de 1994 a febrero de 1996.
On symmetries of N=(4,4) sigma models on T^4
Creators: name: Volpato, Roberto
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Motivated by an analogous result for K3 models, we classify all groups of symmetries of non-linear sigma models on a torus T^4 that preserve the N=(4,4) superconformal algebra. The resulting symmetry groups are isomorphic to certain subgroups of the Weyl group of E8, that plays a role similar to the Conway group for the case of K3 models. Our analysis heavily relies on the triality automorphism of the T-duality group SO(4,4,Z). As a byproduct of our results, we discover new explicit descriptions of K3 models as asymmetric orbifolds of torus CFTs.
description: 42 pages; minor changes, references added; version accepted for publication
Model independent bounds on Type Ia supernova absolute peak magnitude
Creators: name: Dinda, Bikash R.
name: Banerjee, Narayan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We put constraints on the peak absolute magnitude, $M_B$ of type Ia supernova using the Pantheon sample for type Ia supernova observations and the cosmic chronometers data for the Hubble parameter by a model independent and non-parametric approach. Our analysis is based on the Gaussian process regression. We find percent level bounds on the peak absolute magnitude given as $M_B=-19.384\pm0.052$. For completeness and to check the consistency of the results, we also include the Baryon acoustic oscillation data and the prior of the comoving sound horizon from Planck 2018 cosmic microwave background observations. The inclusion of these two data gives tighter constraints on $M_B$ at the sub-percent level. We obtain constraints on $M_B$ from the combination of pantheon compilation of type Ia supernova observations and baryon acoustic oscillation observations given as $M_B=-19.396\pm0.016$. When adding the cosmic chronometer observations with these observations, we find $M_B=-19.395\pm0.015$. The mean values of peak absolute magnitude from all these data are consistent with each other and the values are approximately equal to $-19.4$.
description: Accepted for publication in PRD; detailed calculation and discussion of methodology added; appendices added; 13+10 pages; 10+2 figures; 1+6 tables; comments are welcome
Measurement of the Cosmic Microwave Background Polarization Lensing Power Spectrum with the POLARBEAR experiment
Creators: name: POLARBEAR Collaboration
name: Ade, P. A. R.
name: Akiba, Y.
name: Anthony, A. E.
name: Arnold, K.
name: Atlas, M.
name: Barron, D.
name: Boettger, D.
name: Borrill, J.
name: Chapman, S.
name: Chinone, Y.
name: Dobbs, M.
name: Elleflot, T.
name: Errard, J.
name: Fabbian, G.
name: Feng, C.
name: Flanigan, D.
name: Gilbert, A.
name: Grainger, W.
name: Halverson, N. W.
name: Hasegawa, M.
name: Hattori, K.
name: Hazumi, M.
name: Holzapfel, W. L.
name: Hori, Y.
name: Howard, J.
name: Hyland, P.
name: Inoue, Y.
name: Jaehnig, G. C.
name: Jaffe, A.
name: Keating, B.
name: Kermish, Z.
name: Keskitalo, R.
name: Kisner, T.
name: Jeune, M. Le
name: Lee, A. T.
name: Linder, E.
name: Leitch, E. M.
name: Lungu, M.
name: Matsuda, F.
name: Matsumura, T.
name: Meng, X.
name: Miller, N. J.
name: Morii, H.
name: Moyerman, S.
name: Myers, M. J.
name: Navaroli, M.
name: Nishino, H.
name: Paar, H.
name: Peloton, J.
name: Quealy, E.
name: Rebeiz, G.
name: Reichardt, C. L.
name: Richards, P. L.
name: Ross, C.
name: Schanning, I.
name: Schenck, D. E.
name: Sherwin, B.
name: Shimizu, A.
name: Shimmin, C.
name: Shimon, M.
name: Siritanasak, P.
name: Smecher, G.
name: Spieler, H.
name: Stebor, N.
name: Steinbach, B.
name: Stompor, R.
name: Suzuki, A.
name: Takakura, S.
name: Tomaru, T.
name: Wilson, B.
name: Yadav, A.
name: Zahn, O.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Gravitational lensing due to the large-scale distribution of matter in the cosmos distorts the primordial Cosmic Microwave Background (CMB) and thereby induces new, small-scale $B$-mode polarization. This signal carries detailed information about the distribution of all the gravitating matter between the observer and CMB last scattering surface. We report the first direct evidence for polarization lensing based on purely CMB information, from using the four-point correlations of even- and odd-parity $E$- and $B$-mode polarization mapped over $\sim30$ square degrees of the sky measured by the POLARBEAR experiment. These data were analyzed using a blind analysis framework and checked for spurious systematic contamination using null tests and simulations. Evidence for the signal of polarization lensing and lensing $B$-modes is found at 4.2$σ$ (stat.+sys.) significance. The amplitude of matter fluctuations is measured with a precision of $27\%$, and is found to be consistent with the Lambda Cold Dark Matter ($Λ$CDM) cosmological model. This measurement demonstrates a new technique, capable of mapping all gravitating matter in the Universe, sensitive to the sum of neutrino masses, and essential for cleaning the lensing $B$-mode signal in searches for primordial gravitational waves.
description: 7 pages, 3 figures. Matches Physical Review Letters accepted version. Submitted on 11 March 2014; accepted on 25 April 2014. The companion paper (arXiv:1312.6645) describes a measurement of polarization lensing in cross-correlation
Wie kann man formales Beweisen fördern? Entwicklungsforschung zu Lehr-Lern-Arrangements in der Sekundarstufe
Creators: name: Hein, Kerstin
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2023
Subjects: subject: Beweisen
subject: Fachdidaktische Entwicklungsforschung
subject: Lehr-Lern-Arrangements
subject: Forschungssynthese
subject: Argumentieren
subject: 510

description: Das Erlernen des formalen Beweisens kann für die Lernenden bedeutsam sein, u.a. um einen Zugang zu mathematischen Wissen allgemein zu erhalten (Hanna & Barbeau, 2008), auch wenn formales Beweisen, hier ist das Herleiten mathematischer Sätze in deduktiven Schritten gemeint, nur eine Art des Begründens im Mathematikunterricht ist. Obwohl viele Studien die Herausforderungen beim Beweisen beschreiben (z.B. Harel & Sowder, 1998), gibt es nur wenig konkrete Unterrichtsansätze für die Sekundarstufen, die Lernende dabei unterstützen, die Herausforderungen zu bewältigen. Nach Stylianides et al. (2017) sollten die benötigten Unterrichtsansätze zum Beweisenlernen auf beweisspezifische Designprinzipien aufbauen und in konkreten Lehr-Lern-Arrangements realisiert werden. Im Folgenden werden Ansätze für die Entwicklung von Lehr-Lern-Arrangements zum Beweisen dargestellt.
Small ball probabilities for linear images of high dimensional distributions
Creators: name: Rudelson, Mark
name: Vershynin, Roman
Publisher: name: arXiv
Year: 2014
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60G50, 60F10, 60E05

description: We study concentration properties of random vectors of the form $AX$, where $X = (X_1, ..., X_n)$ has independent coordinates and $A$ is a given matrix. We show that the distribution of $AX$ is well spread in space whenever the distributions of $X_i$ are well spread on the line. Specifically, assume that the probability that $X_i$ falls in any given interval of length $T$ is at most $p$. Then the probability that $AX$ falls in any given ball of radius $T \|A\|_{HS}$ is at most $(Cp)^{0.9 r(A)}$, where $r(A)$ denotes the stable rank of $A$ and $C$ is an absolute constant.
description: 18 pages. A statement of Rogozin's theorem is added. Small corrections are made
แนวทางการขับเคลื่อนเกษตรอินทรีย์เพื่อสร้างความมั่นคงด้านอาหารปลอดภัยสำหรับชุมชน : บทสะท้อนจากภาคปฏิบัติการ
Creators: name: อภิชาติ ใจอารีย์
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยศิลปากร
Year: 2561
Subjects: เกษตรอินทรีย์
ความมั่นคงด้านอาหาร
อาหารปลอดภัย

description: วารสารมหาวิทยาลัยศิลปากร, 38, 5, 1.-17
Stability of Fixed Points in Generalized Fractional Maps of the Orders $0< α<1$
Creators: name: Edelman, Mark
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences
subject: 47H99 60G99 34A99 39A70

description: Caputo fractional (with power-law kernels) and fractional (delta) difference maps belong to a more widely defined class of generalized fractional maps, which are discrete convolutions with some power-law-like functions. The conditions of the asymptotic stability of the fixed points for maps of the orders $0< α<1$ that are derived in this paper are narrower than the conditions of stability for the discrete convolution equations in general and wider than the well-known conditions of stability for the fractional difference maps. The derived stability conditions for the fractional standard and logistic maps coincide with the results previously observed in numerical simulations. In nonlinear maps, one of the derived limits of the fixed-point stability coincides with the fixed-point - asymptotically period two bifurcation point.
description: 6 pages, 2 figures
Minisymposium 08: Problem Posing und Problemlösen
Creators: name: Krawitz, Janina
name: Baumanns, Lukas
name: Fritzlar, Torsten
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2023
Subjects: subject: Problem Posing
subject: Problemlösen
subject: Aufgabenvariation
subject: 510

description: Problemlösen ist seit vielen Jahrzehnten ein zentrales Forschungsgebiet mit großer Bedeutung für das Lehren und Lernen von Mathematik. Innerhalb dieser langen Forschungstradition ergeben sich stets neue Perspektiven auf das Problemlösen, die den Diskurs weiterführen. Problem Posing – das Aufwerfen eigener Probleme – ist ein wesentlich jüngeres Thema in der Mathematikdidaktik. Problem Posing besitzt großes Potential für die Förderung des Problemlösens, stellt aber auch für sich genommen ein wichtiges Lernziel dar. Im Gegensatz zum Problemlösen steht die Forschung zum Problem Posing noch am Anfang. Auch wenn bereits erste Vorschläge für eine systematische, theoriebasierte Strukturierung des Feldes gemacht wurden, fehlt es bislang an etablierten, empirisch abgesicherten Modellen. Im Minisymposium wurden aktuelle Forschungsprojekte und -ergebnisse zum Problemlösen und zum Problem Posing vorgestellt und gemeinsam diskutiert. Im Folgenden werden die Beiträge des Minisymposiums zusammengefasst.
Spherical collapse in $νΛCDM$
Creators: name: LoVerde, Marilena
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The abundance of massive dark matter halos hosting galaxy clusters provides an important test of the masses of relic neutrino species. The dominant effect of neutrino mass is to lower the typical amplitude of density perturbations that eventually form halos, but for neutrino masses $> 0.4eV$ the threshold for halo formation can be changed significantly as well. We study the spherical collapse model for halo formation in cosmologies with neutrino masses in the range $m_{νi} =0.05eV$- $1eV$ and find that halo formation is differently sensitive to $Ω_ν$ and $m_ν$. That is, different neutrino hierarchies with common $Ω_ν$ are in principle distinguishable. The added sensitivity to $m_ν$ is small but potentially important for scenarios with heavier sterile neutrinos. Massive neutrinos cause the evolution of density perturbations to be scale-dependent at high redshift which complicates the usual mapping between the collapse threshold and halo abundance. We propose one way of handling this and compute the correction to the halo mass function within this framework. For $\sum m_{νi} < 0.3eV$, our prescription for the halo abundance is only $\sim< 15\%$ different than the standard calculation. However for larger neutrino masses the differences approach $50-10\%$ which, if verified by simulations, could alter neutrino mass constraints from cluster abundance.
description: 20 pages, 10 figures; v2: typos corrected, references added; v3: typos corrected, minor clarifications to text, PRD accepted version
title: Investigating consumer attitudes and behavior towards food waste : evidence from Greek households
title: Διερεύνηση στάσεων και συμπεριφοράς των καταναλωτών απέναντι στα απόβλητα τροφίμων : στοιχεία από τα ελληνικά νοικοκυριά
titleType: AlternativeTitle
Creators: name: Δημάρκο, Ανίσα
name: Dhimarko, Anisa
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2023
Subjects: subject: Ελληνικά νοικοκυριά
subject: Σπατάλη τροφίμων
subject: Καταναλωτικές στάσεις
subject: Καταναλωτικές συμπεριφορές
subject: Βιωσιμότητα
subject: Οικιακή σπατάλη τροφίμων

description: Η σπατάλη τροφίμων αποτελεί σημαντική αιτία για την εξάντληση των ενεργειακών πόρων του πλανήτη και την επιδείνωση των κοινωνικών ανισοτήτων. Τα οικιακά απορρίμματα τροφίμων αντιπροσωπεύουν περισσότερο από το ήμισυ των συνολικών απορριμμάτων τροφίμων στην Ευρώπη, ενώ η Ελλάδα είναι μία από τις χώρες με τα υψηλότερα ποσοστά απορριμμάτων τροφίμων στην Ευρώπη. Ο εντοπισμός των στάσεων και των συμπεριφορών των Ελλήνων καταναλωτών που οδηγούν στη σπατάλη τροφίμων θα μπορούσε να μας καθοδηγήσει στην εξεύρεση πιθανών λύσεων για τη μείωση της σπατάλης τροφίμων. Για τη διεξαγωγή της έρευνας εφαρμόστηκε ποιοτική ανάλυση, συνοπτική στατιστική, μοντέλο κατηγορικής παλινδρόμησης και διερεύνηση ερευνητικών υποθέσεων. Τα δεδομένα συλλέχθηκαν μέσω έρευνας σε δείγμα 467 Ελλήνων καταναλωτών που πραγματοποιήθηκε τον Νοέμβριο του 2022 στην περιοχή της Αττικής. Τα αποτελέσματα της έρευνας δείχνουν ότι τα δημογραφικά χαρακτηριστικά, οι στάσεις και οι συμπεριφορές των Ελλήνων καταναλωτών στο στάδιο της αγοράς και της διαχείρισης των τροφίμων, καθώς και οι απόψεις τους για την αειφορία και την ασφάλεια των τροφίμων, αποτελούν σημαντικούς παράγοντες για τη δημιουργία ή την πρόληψη της σπατάλης τροφίμων. Επιπλέον, όσον αφορά τη σπατάλη τροφίμων, τα φρούτα, και τα λαχανικά είναι τα τρόφιμα που απορρίπτονται συχνότερα από τους καταναλωτές. Για να μειωθεί η σπατάλη τροφίμων, είναι απαραίτητο οι Έλληνες πολίτες να ενημερωθούν σωστά από την πολιτεία για την καλύτερη διαχείριση των τροφίμων τους και τις επιπτώσεις της σπατάλης τροφίμων στο περιβάλλον και την κοινωνία.
Dark Matter versus h into gamma gamma and h into gamma Z with supersymmetric triplets
Creators: name: Arina, Chiara
name: Martin-Lozano, Victor
name: Nardini, Germano
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The Triplet extension of the MSSM (TMSSM) alleviates the little hierarchy problem and provides a significant enhancement of the loop-induced diphoton rate of the lightest CP-even Higgs h. In this paper we pursue the analysis of the TMSSM Higgs phenomenology by computing for the first time the h into Z + gamma decay. Interestingly we find that the rates of loop-induced decays are correlated and their signal strengths can rise up to 40% - 60% depending on the channel. We furthermore study the dark matter phenomenology of the TMSSM. The lightest neutralino is a good dark matter candidate in two regions. The first one is related to the Higgs and Z resonances and the LSP is mostly Bino. The second one is achieved for a mass larger than 90 GeV and the LSP behaves as the well-tempered neutralino. An advantage of the triplet contribution is that the well-tempered neutralino can be a Bino-Triplino mixture, relieving the problem of achieving M_2 ~ M_1 in unified scenarios. The dark matter constraints strongly affect the Higgs phenomenology, reducing the potential enhancements of the diphoton and of the Z + photon channels by 20% at most. These enhancements are however larger than the MSSM ones. In the near future, complementarity of dark matter direct searches and collider experiments will be crucial to probe most of the parameter space where the neutralino is the dark matter candidate.
description: 34 pages, 2 tables and 11 figures; this version matches the published one in JHEP
Emergent centrality in rank-based supplanting process
Creators: name: Shimomura, Kenji
name: Ishitsuka, Yasuhiro
name: Ohta, Hiroki
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: We propose a stochastic process of interacting many agents, which is inspired by rank-based supplanting dynamics commonly observed in a group of Japanese macaques. In order to characterize the breaking of permutation symmetry with respect to agents' rank in the stochastic process, we introduce a rank-dependent quantity, overlap centrality, which quantifies how often a given agent overlaps with the other agents. We give a sufficient condition in a wide class of the models such that overlap centrality shows perfect correlation in terms of the agents' rank in zero-supplanting limit. We also discuss a singularity of the correlation in the case of interaction induced by a Potts energy.
description: 32 pages, 11 figures
Instrumentación de un canal de olas para experimentación con la retrodispersión de microondas debida a olas generadas por viento /
Creators: name: Nava Valdez, Marco Efren
Publisher: name: Universidad Autónoma de Baja California.
Year: 2022
Subjects: subject: TC1650 N38 1999

description: Se presenta la implementación de instrumentos electrónicos que se requieren en un canal de olas para uso científico en el estudio de la retrodispersión de microondas debida a olas superficiales generadas por viento.
On three-dimensional quasi-Stäckel Hamiltonians
Creators: name: Marikhin, V. G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A three-dimensional integrable generalization of the Stäckel systems is proposed. The classification of such systems is obtained which results in two families. The first one is the direct sum of the two-dimensional case which is equivalent to the representation of the Schottky--Manakov top in the quasi-Stäckel form and a trivial one-dimensional system. The second family is probably a new three-dimensional system. The system of hydrodynamic type, which we get from this family in a usual way, is a 3-dimensional generalization of the Gibbons--Tsarev system. A generalization of the quasi-Stäckel systems to the case of any dimension is discussed.
description: 7 pages
Survival Probability for Open Spherical Billiards
Creators: name: Dettmann, Carl P.
name: Rahman, Mohammed R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Dynamical Systems (math.DS)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We study the survival probability for long times in an open spherical billiard, extending previous work on the circular billiard. We provide details of calculations regarding two billiard configurations, specifically a sphere with a circular hole and a sphere with a square hole. The constant terms of the long-term survival probability expansions have been derived analytically. Terms that vanish in the long time limit are investigated analytically and numerically, leading to connections with the Riemann hypothesis.
Halo bias in mixed dark matter cosmologies
Creators: name: LoVerde, Marilena
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The large-scale distribution of cold dark matter halos is generally assumed to trace the large-scale distribution of matter. In a universe with multiple types of matter fluctuations, as is the case with massive neutrinos, the relation between the halo field and the matter fluctuations may be more complicated. We develop a method for calculating the bias factor relating fluctuations in the halo number density to fluctuations in the mass density in the presence of multiple fluctuating components of the energy density. In the presence of massive neutrinos we find a small but pronounced feature in the halo bias near the neutrino free-streaming scale. The neutrino feature is a small step with amplitude that increases with halo mass and neutrino mass density. The scale-dependent halo bias lessens the suppression of the small-scale halo power spectrum and should therefore weaken constraints on neutrino mass from the galaxy auto-power spectrum and correlation function. On the other hand, the feature in the bias is itself a novel signature of massive neutrinos that can be studied independently.
description: 14 pages, 8 figures; v2: references added, typos corrected, minor changes to introduction; v3: minor changes to text, references added, matches PRD accepted version
The Herschel Exploitation of Local Galaxy Andromeda (HELGA): IV. Dust scaling relations at sub-kpc resolution
Creators: name: Viaene, S.
name: Fritz, J.
name: Baes, M.
name: Bendo, G. J.
name: Blommaert, J. A. D. L.
name: Boquien, M.
name: Boselli, A.
name: Ciesla, L.
name: Cortese, L.
name: De Looze, I.
name: Gear, W. K.
name: Gentile, G.
name: Hughes, T. M.
name: Jarrett, T.
name: Karczewski, O. Ł.
name: Smith, M. W. L.
name: Spinoglio, L.
name: Tamm, A.
name: Tempel, E.
name: Thilker, D.
name: Verstappen, J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The imprints of dust-starlight interactions are visible in scaling relations between stellar characteristics, star formation parameters and dust properties. We aim to examine dust scaling relations on a sub-kpc resolution in the Andromeda galaxy (M31) by comparing the properties on a local and global scale to other galaxies of the local universe. New Herschel observations are combined with available data from GALEX, SDSS, WISE and Spitzer to construct a dataset covering UV to submm wavelengths. We work at the resolution of the SPIRE $500\; μ$m beam, with pixels corresponding to physical regions of 137 x 608 pc in the galaxy's disk. A panchromatic spectral energy distribution was modelled for each pixel and several dust scaling relations are investigated. We find, on a sub-kpc scale, strong correlations between $M_d/M_\star$ and NUV-r, and between $M_d/M_\star$ and $μ_\star$ (the stellar mass surface density). Striking similarities with corresponding relations based on integrated galaxies are found. We decompose M31 in four macro-regions based on their FIR morphology; the bulge, inner disk, star forming ring and the outer disk. All regions closely follow the galaxy-scale average trends. The specific star formation characteristics we derive for these macro-regions give strong hints of an inside-out formation of the bulge-disk geometry, as well as an internal downsizing process. However, within each macro-region, a great diversity in individual micro-regions is found. Furthermore, we confirm that dust in the bulge of M31 is heated only by the old stellar populations. In general, the local dust scaling relations indicate that the dust content in M31 is maintained by a subtle interplay of past and present star formation. The similarity with galaxy-based relations strongly suggests that they are in situ correlations, with underlying processes that must be local in nature. (Abriged)
description: 23 pages, 12 figures, Published in Astronomy & Astrophysics
การศึกษาศักยภาพแหล่งท่องเที่ยวเกาะเต่า จังหวัดสุราษฏร์ธานี เพื่อเป็นแนวทางในการพัฒนาการท่องเที่ยวอย่างยั่งยืน
Creators: name: อิสระพงษ์ พลธานี
name: อุมาพร บุญเพชรแก้ว
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยศิลปากร
Year: 2561
Subjects: ศักยภาพแหล่งท่องเที่ยว
การท่องเที่ยวอย่างยั่งยืน
เกาะเต่า
จังหวัดสุราษฎร์ธานี

description: วารสารมหาวิทยาลัยศิลปากร, 38, 5, 18-39
Thermal interferometry of anyons
Creators: name: Wei, Zezhu
name: Batra, Navketan
name: Mitrović, V. F.
name: Feldman, D. E.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Anyonic interferometry probes the braiding phases of excitations in topologically ordered matter. This technique is well established for charged quasiparticles in the fractional quantum Hall effect. We propose to extend it to neutral anyons, such as Ising anyons in Kitaev magnets and quasiparticles in other neutral spin liquids. We find that the thermal current through an interferometer is sensitive to the statistics of tunneling quasiparticles. We present a systematic investigation of signatures of various Abelian and non-Abelian topological orders in Fabry-Pérot and Mach-Zehnder interferometers. The heat current through a Fabry-Pérot device is different for different topological orders and depends on the topological charge inside the interferometer. A Mach-Zehnder device shows interference in topologically trivial systems only. For a non-trivial statistics, the heat current reduces to the sum of the contributions from two constrictions in the interferometer. Furthermore, we identify another probe of topological order that involves the scaling of the thermal current through a single tunneling contact at low temperatures. The current shows a universal temperature dependence, sensitive to the topological order in the system.
description: 36 pages, 13 figures, 1 table, accepted for publication in PRB
Contiguous 3d and 4f magnetism: towards strongly correlated 3d electrons in YbFe2Al10
Creators: name: Khuntia, P.
name: Peratheepan, P.
name: Strydom, A.
name: Utsumi, Y.
name: Ko, K. -T.
name: Tsuei, K. -D.
name: Tjeng, L. H.
name: Steglich, F.
name: Baenitz, M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present magnetization, specific heat, and 27Al NMR investigations on YbFe2Al10 over a wide range in temperature and magnetic field. The magnetic susceptibility at low temperatures is strongly enhanced at weak magnetic fields, accompanied by a ln(T0/T) divergence of the low-T specific heat coefficient in zero field, which indicates a ground state of correlated electrons. From our hard X-ray photo emission spectroscopy (HAXPES) study, the Yb valence at 50 K is evaluated to be 2.38. The system displays valence fluctuating behavior in the low to intermediate temperature range, whereas above 400 K, Yb3+ carries a full and stable moment, and Fe carries a moment of about 3.1 mB. The enhanced value of the Sommerfeld Wilson ratio and the dynamic scaling of spin-lattice relaxation rate divided by T [27(1/T1T)] with static susceptibility suggests admixed ferromagnetic correlations. 27(1/T1T) simultaneously tracks the valence fluctuations from the 4f -Yb ions in the high temperature range and field dependent antiferromagnetic correlations among partially Kondo screened Fe 3d moments at low temperature, the latter evolve out of an Yb 4f admixed conduction band.
description: To appear in Phys. Rev. Lett
Stationary non-radial localized patterns in the planar Swift-Hohenberg PDE: constructive proofs of existence
Creators: name: Cadiot, Matthieu
name: Lessard, Jean-Philippe
name: Nave, Jean-Christophe
Publisher: name: arXiv
Year: 2024
Subjects: subject: Analysis of PDEs (math.AP)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: In this paper, we present a methodology for establishing constructive proofs of existence of smooth, stationary, non-radial localized patterns in the planar Swift-Hohenberg equation. Specifically, given an approximate solution $u_0$, we construct an approximate inverse for the linearization around $u_0$, enabling the development of a Newton-Kantorovich approach. Consequently, we derive a sufficient condition for the existence of a unique localized pattern in the vicinity of $u_0$. The verification of this condition is facilitated through a combination of analytic techniques and rigorous numerical computations. Moreover, an additional condition is derived, establishing that the localized pattern serves as the limit of a family of periodic solutions (in space) as the period tends to infinity. The integration of analytical tools and meticulous numerical analysis ensures a comprehensive validation of this condition. To illustrate the efficacy of the proposed methodology, we present computer-assisted proofs for the existence of three distinct unbounded branches of periodic solutions in the planar Swift-Hohenberg equation, all converging towards a localized planar pattern, whose existence is also proven constructively. All computer-assisted proofs, including the requisite codes, are accessible on GitHub at \cite{julia_cadiot}.
แนวทางพัฒนาธุรกิจของกลุ่มแม่บ้าน กองพลทหารราบที่ 15 กองทัพภาคที่ 4
Creators: name: ชมพูนุช ศรีพงษ์
name: สันติ อารักษ์คุณากร
name: ปิยะดา มณีนิล
name: สัสดี กำแพงดี
name: วัลย์ลดา พรหมเวียง
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยศิลปากร
Year: 2561
Subjects: การพัฒนาธุรกิจ
กลุ่มแม่บ้าน
กองทัพภาคที่ 4

description: วารสารมหาวิทยาลัยศิลปากร, 38, 5, 40-58
Lattice Gauge Tensor Networks
Creators: name: Silvi, Pietro
name: Rico, Enrique
name: Calarco, Tommaso
name: Montangero, Simone
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present a unified framework to describe lattice gauge theories by means of tensor networks: this framework is efficient as it exploits the high amount of local symmetry content native of these systems describing only the gauge invariant subspace. Compared to a standard tensor network description, the gauge invariant one allows to speed-up real and imaginary time evolution of a factor that is up to the square of the dimension of the link variable. The gauge invariant tensor network description is based on the quantum link formulation, a compact and intuitive formulation for gauge theories on the lattice, and it is alternative to and can be combined with the global symmetric tensor network description. We present some paradigmatic examples that show how this architecture might be used to describe the physics of condensed matter and high-energy physics systems. Finally, we present a cellular automata analysis which estimates the gauge invariant Hilbert space dimension as a function of the number of lattice sites and that might guide the search for effective simplified models of complex theories.
description: 28 pages, 9 figures
Programmable time-multiplexed squeezed light source
Creators: name: Tomoda, Hiroko
name: Yoshida, Takato
name: Kashiwazaki, Takahiro
name: Umeki, Takeshi
name: Enomoto, Yutaro
name: Takeda, Shuntaro
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: One of the leading approaches to large-scale quantum information processing (QIP) is the continuous-variable (CV) scheme based on time multiplexing (TM). As a fundamental building block for this approach, quantum light sources to sequentially produce time-multiplexed squeezed-light pulses are required; however, conventional CV TM experiments have used fixed light sources that can only output the squeezed pulses with the same squeezing levels and phases. We here demonstrate a programmable time-multiplexed squeezed light source that can generate sequential squeezed pulses with various squeezing levels and phases at a time interval below 100 ns. The generation pattern can be arbitrarily chosen by software without changing its hardware configuration. This is enabled by using a waveguide optical parametric amplifier and modulating its continuous pump light. Our light source will implement various large-scale CV QIP tasks.
description: 16 pages, 8 figures
RPV SUSY effects in $τ^- \to e^-(μ^-) K\bar{K}$ Decays
Creators: name: Li, Wenjun
name: Nie, Xiao-qin
name: Fan, Ying-Ying
name: Lu, Ming-Qiang
name: Guo, Yu-wei
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper, we investigate $τ^- \to e^-(μ^-) K\bar{K}(K\bar{K}=K ^+K^-,K^0\bar{K}^0)$ decays in the framework of the RPV SUSY model. We discuss the tree level contribution of the sparticles $\tildeν$ and $\tilde{u}$ to these decay branching ratios. In the two channels, the $\tildeν$-mediated channel is more sensitive to the parameter product $|λ^{'*}_{i22}λ_{i31(2)}|$ than the $\tilde{u}$-mediated channel to $|λ^{'*}_{1(2)j2}λ'_{3j2}|$. And the parameter product $|λ^{'*}_{i22}λ_{i31(2)}|$ is severely constrained to the order of ${\cal O}(10^{-5})$ by the experiment data with $m_{\tildeν}=100 GeV$, which is one order of magnitude more stringent than before. In the calculation of hadronic matrix elements, the resonant effects are large than those of non-resonant terms. Especially, the resonant contribution of scalar meson $f_{(980)}$ plays a dominate role in $\tildeν$-mediated channel.
description: 8 pages, 3 figures, 1 Table. Add the discussion of squarks' contribution
อิทธิพลของบุคลิกภาพเชิงรุก วัฒนธรรมองค์การ และความยึดมั่นผูกพันในงานที่มีต่อผลการปฏิบัติงานของพนักงานระดับปฏิบัติการเจเนอเรชั่นวาย บริษัทผลิตชิ้นส่วนยานยนต์
Creators: name: อัสนีภรณ์ อรรถพิธ
name: ศยามล เอกะกุลานันต์
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยศิลปากร
Year: 2561
Subjects: บุคลิกภาพเชิงรุก
วัฒนธรรมองค์การ
ความยึดมั่นผูกพันในงาน
ผลการปฏิบัติงาน
เจเนอเรชันวาย

description: วารสารมหาวิทยาลัยศิลปากร, 38, 5, 59-79
Comparing Shape-Constrained Regression Algorithms for Data Validation
Creators: name: Bachinger, Florian
name: Kronberger, Gabriel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Industrial and scientific applications handle large volumes of data that render manual validation by humans infeasible. Therefore, we require automated data validation approaches that are able to consider the prior knowledge of domain experts to produce dependable, trustworthy assessments of data quality. Prior knowledge is often available as rules that describe interactions of inputs with regard to the target e.g. the target must be monotonically decreasing and convex over increasing input values. Domain experts are able to validate multiple such interactions at a glance. However, existing rule-based data validation approaches are unable to consider these constraints. In this work, we compare different shape-constrained regression algorithms for the purpose of data validation based on their classification accuracy and runtime performance.
description: 9 pages, Submitted manuscript to be published in Computer Aided System Theory - EUROCAST 2022, Las Palmas de Gran Canaria, February 2022
Electrically Charged One and a Half Monopole Solution
Creators: name: Teh, Rosy
name: Ng, Ban-Loong
name: Wong, Khai-Ming
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recently, we have discussed the coexistence of a finite energy one-half monopole and a 't Hooft-Polyakov monopole of opposite magnetic charges. In this paper, we would like to introduce electric charge into this new monopoles configuration, thus creating a one and a half dyon. This new dyon possesses finite energy, magnetic dipole moment and angular momentum and is able to precess in the presence of an external magnetic field. Similar to the other dyon solutions, when the Higgs self-coupling constant, $λ$, is nonvanishing, this new dyon solution possesses critical electric charge, total energy, magnetic dipole moment, and dipole separation as the electric charge parameter, $η$, approaches one. The electric charge and total energy increase with $η$ to maximum critical values as $η\rightarrow1$ for all nonvanishing $λ$. However, the magnetic dipole moment decreases with $η$ when $λ\geq0.1$ and the dipole separation decreases with $η$ when $λ\geq1$ to minimum critical values as $η\rightarrow1$.
description: 24 pages, 7 figures. arXiv admin note: text overlap with arXiv:1208.4893, arXiv:1112.1492
Geometric Critical Exponents in Classical and Quantum Phase Transitions
Creators: name: Kumar, Prashant
name: Sarkar, Tapobrata
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We define geometric critical exponents for systems that undergo continuous second order classical and quantum phase transitions. These relate scalar quantities on the information theoretic parameter manifolds of such systems, near criticality. We calculate these exponents by approximating the metric and thereby solving geodesic equations analytically, near curvature singularities of two dimensional parameter manifolds. The critical exponents are seen to be the same for both classical and quantum systems that we consider, and we provide evidence about the possible universality of our results.
description: 1 + 15 pages, LaTeX. Expanded version with several new examples added. Main results and conclusions are unchanged. Version to appear in Phys. Rev. E