cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Legendre spectral viscosity (LSV) method applied to shock capturing for high-order flux-reconstruction schemes
Creators: name: Sousa, Victor C. B.
name: Scalo, Carlo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: A novel approach to shock capturing for high-order flux reconstruction schemes is derived based on the mathematical formalism of the filtered governing equations. While the latter perspective is only typically used for turbulence modeling in the context of Large-Eddy Simulations (LES), the novel Legendre Spectral Viscosity (LSV) sub-filter scale (SFS) closure model is capable of performing simulations in the presence of shock-discontinuities. The LSV method exploits the set of hierarchical basis functions formed by the Legendre polynomials to extract the information on the energy content near the resolution limit and estimate the overall magnitude of the required SFS dissipative terms, resulting in a scheme that dynamically activates only in cells where nonlinear behavior is important. Additionally, the modulation of such terms in the Legendre spectral space allows for the concentration of the dissipative action at small scales. The proposed method is tested in canonical shock-dominated flow setups in both one and two dimensions. These include the 1D Burgers' problem, a 1D shock tube, a 1D shock-entropy wave interaction, a 2D inviscid shock-vortex interaction and a 2D double Mach reflection. Results showcase a high-degree of resolution power, achieving accurate results with a small number of degrees of freedom, and robustness, being able to capture shocks associated with the Burgers' equation and the 1D shock tube within a single cell with orders 120 and higher.
description: Accepted by Journal of Computational Physics
Universal Early Coarsening of Quenched Bose Gases
Creators: name: Goo, Junhong
name: Lee, Yangheon
name: Lim, Younghoon
name: Bae, Dalmin
name: Rabga, Tenzin
name: Shin, Yong-il
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate the early coarsening dynamics of an atomic Bose gas quenched into a superfluid phase. Using a two-step quench protocol, we effectively control the cooling rates, $r_1$ and $r_2$, during and after passing through the critical region, respectively, and measure the number of quantum vortices spontaneously created in the system. The latter cooling rate $r_2$ regulates the temperature during the condensate growth, consequently controlling the early coarsening dynamics in the defect formation. We find that the defect number shows a scaling behavior with $r_2$ regardless of the initial cooling rate $r_1$, indicating universal coarsening dynamics in the early stage of condensate growth. Our results demonstrate that early coarsening not only reduces the defect density but also affects its scaling with the quench rate, which is beyond the Kibble-Zurek mechanism.
description: 7 pages, 6 figures
World Quantum Theory: A Unified Framework for Quantum and Classical Physics from a Frequency Perspective
Creators: name: yang, Jibon
Publisher: name: yangjibo    Email:  1264855386@qq.com
Year: 2024
Subjects: subject: Quantum physics

description: World Quantum Theory: A Unified Framework for Quantum and Classical Physics from a Frequency Perspective

AbstractTraditional physics assumes that the speed of photon propagation is constant at the speed of light c, forming the foundation of many classical and quantum physical theories. However, the applicability of this assumption in complex fields (such as gravitational fields or media) remains contentious. This paper proposes the "World Quantum" theory, which reexamines photon propagation behavior by distinguishing between the photon's intrinsic rotation (self-spin) and macroscopic rotation (macro-rotation). A key parameter, the "World Factor" (Φw=(c/v)2), is introduced, modifying the photon energy formula to . Within this framework, the photon's propagation speed v may be less than the speed of light c, and its wavelength-frequency product may also be less than c. Through derivations and analyses, this paper unifies the theoretical frameworks of quantum and classical physics, explaining the origins of photon energy, mass, and momentum while offering new perspectives on photon behavior in gravitational fields and under extreme conditions. Although experimental validation is currently lacking, we propose several experimental schemes to test the core predictions of this theory through observations.

Keywords: World Quantum, Quantum Physics, Classical Physics, Unified Framework, Frequency Model, Experimental Validation
Memory truncated Kadanoff-Baym equations
Creators: name: Stahl, Christopher
name: Dasari, Nagamalleswararao
name: Li, Jiajun
name: Picano, Antonio
name: Werner, Philipp
name: Eckstein, Martin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The Keldysh formalism for nonequilibrium Green's functions is a powerful theoretical framework for the description of the electronic structure, spectroscopy, and dynamics of strongly correlated systems. However, the underlying Kadanoff-Baym equations (KBE) for the two-time Keldysh Green's functions involve a memory kernel which results in a high computational cost for long simulation times $t_\text{max}$, with a cubic scaling of the computation time with $t_\text{max}$. Truncation of the memory kernel can reduce the computational cost to linear scaling with $t_\text{max}$, but the required memory times will depend on the model and the diagrammatic approximation to the self-energy. We explain how a truncation of the memory kernel can be incorporated into the time-propagation algorithm to solve the KBE, and investigate the systematic truncation of the memory kernel for the Hubbard model in different parameter regimes, and for different diagrammatic approximations. The truncation is easier to control within dynamical mean-field solutions, where it is applied to a momentum-independent self-energy. Here, simulation times up to two orders of magnitude longer are accessible both in the weak and strong coupling regime, allowing for a study of long-time phenomena such as the crossover between pre-thermalization and thermalization dynamics.
description: 14 pages, 11 figures
World Quantum Theory: A Unified Framework for Quantum and Classical Physics from a Frequency Perspective
Creators: name: yang, Jibon
Publisher: name: YangJiBo    Email:  1264855386@qq.com
Year: 2024
Subjects: subject: Quantum physics

description: World Quantum Theory: A Unified Framework for Quantum and Classical Physics from a Frequency Perspective

AbstractTraditional physics assumes that the speed of photon propagation is constant at the speed of light c, forming the foundation of many classical and quantum physical theories. However, the applicability of this assumption in complex fields (such as gravitational fields or media) remains contentious. This paper proposes the "World Quantum" theory, which reexamines photon propagation behavior by distinguishing between the photon's intrinsic rotation (self-spin) and macroscopic rotation (macro-rotation). A key parameter, the "World Factor" (Φw=(c/v)2), is introduced, modifying the photon energy formula to . Within this framework, the photon's propagation speed v may be less than the speed of light c, and its wavelength-frequency product may also be less than c. Through derivations and analyses, this paper unifies the theoretical frameworks of quantum and classical physics, explaining the origins of photon energy, mass, and momentum while offering new perspectives on photon behavior in gravitational fields and under extreme conditions. Although experimental validation is currently lacking, we propose several experimental schemes to test the core predictions of this theory through observations.

Keywords: World Quantum, Quantum Physics, Classical Physics, Unified Framework, Frequency Model, Experimental Validation
USNM Diptera collection flyer
Creators: name: Dikow, Torsten
Publisher: name: The Smithsonian Institution
Year: 2019
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Zoology

description: Flyer about the USNM Diptera collection at the National Museum of Natural History, Smithsonian Institution
Isovector density and isospin impurity in $^{40} \mathrm{Ca}$
Creators: name: Sagawa, H.
name: Yoshida, S.
name: Naito, T.
name: Uesaka, T.
name: Zenihiro, J.
name: Tanaka, J.
name: Suzuki, T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We study isoscalar (IS) and isovector (IV) densities in ${}^{40} \mathrm{Ca}$ in comparison with theoretical densities calculated by Skyrme Hartree-Fock (HF) models. The charge symmetry breaking and the charge independence breaking forces are introduced to study the effect on the IV density. The effect of isospin mixing in the ground-state density is examined by using the particle-vibration coupling model taking into account the collective IV giant monopole excitation. We show a clear correlations in the IV density and isospin impurity of ${}^{40} \mathrm{Ca}$ within the HF and the particle-vibration coupling model. We extract for the first time the experimental information of isospin impurity from the magnitude of IV density.
description: 6 pages, 7 figures, 1 table for main text; 4 pages, 7 figures, 2 tables for supplemental materials
Wigner-Weyl description of light absorption in disordered semiconductor alloys using the localization landscape theory
Creators: name: Banon, Jean-Philippe
name: Pelletier, Pierre
name: Weisbuch, Claude
name: Mayboroda, Svitlana
name: Filoche, Marcel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The presence of disorder in semiconductors can dramatically change their physical properties. Yet, models faithfully accounting for it are still scarce and computationally inefficient. We present a mathematical and computational model able to simulate the optoelectronic response of semiconductor alloys of several tens of nanometer sidelength, while at the same time accounting for the quantum localization effects induced by the compositional disorder at the nano-scale. The model is based on a Wigner-Weyl analysis of the structure of electron and hole eigenstates in phase space made possible by the localization landscape theory. After validation against eigenstates-based computations in 1D and 2D, our model is applied to the computation of light absorption in 3D InGaN alloys of different compositions. We obtain the detailed structures of the absorption tail below the average bandgap and the Urbach energies of all simulated compositions. Moreover, the Wigner-Weyl formalism allows us to define and compute 3D maps of the effective locally absorbed power at all frequencies. Finally the proposed approach opens the way to generalize this method to all energy-exchange processes such as radiative and non-radiative recombination in realistic devices.
A new approach for Internet advertisements
Creators: name: Palacios, Angel
Publisher: name: figshare
Year: 2016
Subjects: subject: 80505 Web Technologies (excl. Web Search)
subject: FOS: Computer and information sciences
subject: 150599 Marketing not elsewhere classified
subject: FOS: Economics and business
subject: 170201 Computer Perception, Memory and Attention
subject: FOS: Psychology
subject: Applied Psychology
subject: 179999 Psychology and Cognitive Sciences not elsewhere classified

description: Traditional video ads in TV are not well suited for Internet sites. If the user feels a site is forcing him/her to watch long video ads, will stop visiting that site. Therefore, the current approach is to allow the user to skip the ad after a few seconds, despite this means that the ads will have little impact. This paper presents a new approach that engages the user with the brand, while at the same time keeping the user in the website. The approach works by asking the user a question relating to the ad, and if the user responds correctly, the ad is immediately removed. This approach presents benefits both for users and advertisers. The benefit for the user is that (s)he can skip the ad immediately. The benefit for the advertiser is that by putting mental effort on the brand, the brand has more impact on the user.
Концепция новых национальных клинических рекомендаций по ожирению.РКЖ 2016;(4)7-13.pdf
Creators: name: Doe, Jonn
Publisher: name: figshare
Year: 2016
Subjects: subject: 110201 Cardiology (incl. Cardiovascular Diseases)
subject: FOS: Clinical medicine
subject: Cardiology
subject: 110306 Endocrinology

description: Концепция новых национальных клинических рекомендаций по ожирению.РКЖ 2016;(4)7-13
Shape coexistence and neutron skin thickness of Pb isotopes by the deformed relativistic Hartree-Bogoliubov theory in continuum
Creators: name: Kim, Seonghyun
name: Mun, Myeong-Hwan
name: Cheoun, Myung-Ki
name: Ha, Eunja
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate ground states properties of Pb isotopes located between neutron and proton drip-lines estimated by two-neutron (two-proton) separation energies and Fermi energies within the deformed relativistic Hartree-Bogoliubov theory in continuum (DRHBc). First, we report some candidates of nuclear shape coexistence in the isotope chain. They are accessed by calculating total energy as a function of the deformation parameter $β_2$, and for the coexistence candidates we take a couple of the deformation region bringing about minima of the energy within energy difference $ΔE < $ 1 MeV. Second, the Pb isotopes near neutron drip-lines are also investigated and compared to the results by other nuclear mass models. We find out eleven neutron emitters, $^{278 - 296, 300}$Pb, giving rise to the Pb peninsular near the neutron drip-line. Finally, by exploiting the neutron and proton density we deduce the neutron skin thickness (NST) of the Pb isotopes and compare to the available experimental data. The recent data regarding the shape coexistence of $^{184,186,188}$Pb and the NST of $^{208}$Pb are shown to be well matched with the present results.
A new approach for Internet advertisements
Creators: name: Palacios, Angel
Publisher: name: figshare
Year: 2016
Subjects: subject: 80505 Web Technologies (excl. Web Search)
subject: FOS: Computer and information sciences
subject: 150599 Marketing not elsewhere classified
subject: FOS: Economics and business
subject: 170201 Computer Perception, Memory and Attention
subject: FOS: Psychology
subject: Applied Psychology
subject: 179999 Psychology and Cognitive Sciences not elsewhere classified

description: Traditional video ads in TV are not well suited for Internet sites. If the user feels a site is forcing him/her to watch long video ads, will stop visiting that site. Therefore, the current approach is to allow the user to skip the ad after a few seconds, despite this means that the ads will have little impact. This paper presents a new approach that engages the user with the brand, while at the same time keeping the user in the website. The approach works by asking the user a question relating to the ad, and if the user responds correctly, the ad is immediately removed. The benefit for the user is that (s)he can skip the ad immediately. The benefit for the advertiser is that by putting mental effort on the brand, the brand has more impact on the user.
Review of The Hegemon’s Tool Kit: US Leadership and the Politics of the Nuclear Nonproliferation Regime by Rebecca Davis Gibbson
Creators: name: Herzog, Stephen
Publisher: name: ETH Zurich
Year: 2023
Subjects: Hegemony
nonproliferation
United Nations
Nuclear Arms
Nuclear Arms Control

description: CSS Forscher Stephen Herzog rezensiert das 2022 bei Cornell University Press erschienene Buch von Rebecca Davis Gibbons mit dem Titel «The Hegemon's Tool Kit: US Leadership and the Politics of the Nuclear Nonproliferation Regime». Er kommt zu dem Schluss, dass das Buch eine wichtige Bildungsressource sein könnte, um die Entstehung und Förderung der globalen Nuklearordnung zu verstehen. Das Buch wirft auch zwei natürliche Fragen auf. Erstens: Wie wird das Nichtverbreitungsregime mit dem Krieg Russlands gegen die Ukraine und seinen Auswirkungen auf die globale nukleare Ordnung umgehen? Zweitens: Kann der relativ neue UN-Vertrag über das Verbot von Kernwaffen erfolgreich sein, wenn der Hegemon sich ihm weiterhin widersetzt?
description: CSS' Stephen Herzog reviews Rebecca Davis Gibbons' 2022 Cornell University Press book titled The Hegemon’s Tool Kit: US Leadership and the Politics of the Nuclear Nonproliferation Regime. He concludes that the book could be a key educational resource for understanding the formation and promotion of the global nuclear order. Two natural questions are also raised by the book. First, how will the nonproliferation regime cope with Russia's war on Ukraine and its implications for the global nuclear order? Second, can the relatively new UN Treaty on the Prohibition of Nuclear Weapons be successful if the hegemon continues to oppose it?
description: Journal for Peace and Nuclear Disarmament, 6 (1)
World Quantum Theory: A Unified Framework for Quantum and Classical Physics from a Frequency Perspective
Creators: name: yang, Jibon
Publisher: name: YangJiBo    Email:  1264855386@qq.com
Year: 2024
Subjects: subject: Quantum physics

description: World Quantum Theory: A Unified Framework for Quantum and Classical Physics Based on Frequency

Abstract

Traditional physics assumes that the propagation speed of photons in a vacuum is a constant c, forming the foundation of numerous classical and quantum physical theories. However, the applicability of this assumption in complex fields, such as gravitational or electromagnetic fields, remains contentious. This paper proposes the "World Quantum" theory, which posits that photons are composed of the smallest energy units of the physical world, referred to as World Quanta. By distinguishing between the Internal-Rotation and Macro-Rotation of the World Quantum and introducing the key parameter "World Factor" Φw=(c/v)2, the photon energy formula is revised to  . In this framework, the Internal-Rotation speed of the World Quantum is constant at the speed of light c and is unaffected by various energy fields in the physical world, while its Macro-Rotation speed is influenced by these fields and can vary.

Through logical analysis and mathematical derivations, this study provides a detailed explanation of the physical behavior of World Quanta and unifies the theoretical frameworks of quantum and classical physics. It explains the origins of photon energy, mass, and momentum and offers a novel perspective on photon behavior in gravitational fields and under extreme conditions. Although experimental validation is currently lacking, this paper proposes feasible experimental schemes to verify the core predictions of the theory through observation.

Keywords: World Quantum, Quantum Physics, Classical Physics, Unified Framework, Frequency Model, Experimental Validation
Alternative formulations of the twistor double copy
Creators: name: Chacón, Erick
name: Nagy, Silvia
name: White, Chris D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The classical double copy relating exact solutions of biadjoint scalar, gauge and gravity theories continues to receive widespread attention. Recently, a derivation of the exact classical double copy was presented, using ideas from twistor theory, in which spacetime fields are mapped to Cech cohomology classes in twistor space. A puzzle remains, however, in how to interpret the twistor double copy, in that it relies on somehow picking special representatives of each cohomology class. In this paper, we provide two alternative formulations of the twistor double copy using the more widely-used language of Dolbeault cohomology. The first amounts to a rewriting of the Cech approach, whereas the second uses known techniques for discussing spacetime fields in Euclidean signature. The latter approach indeed allows us to identify special cohomology representatives, suggesting that further application of twistor methods in exploring the remit of the double copy may be fruitful.
description: 26 pages, 1 figure
World Quantum Theory: A Unified Framework for Quantum and Classical Physics from a Frequency Perspective
Creators: name: yang, Jibon
Publisher: name: YangJiBo    Email:  1264855386@qq.com
Year: 2024
Subjects: subject: Quantum physics

description: World Quantum Theory: A Unified Framework for Quantum and Classical Physics Based on Frequency

Abstract

The propagation speed of photons in a vacuum is commonly assumed to be a constant ccc, which serves as the foundation for numerous classical and quantum physical theories. However, its applicability in complex fields, such as gravitational or electromagnetic fields, remains controversial. This paper proposes the "World Quantum" theory, introducing the fundamental concept of "World Quanta" as the smallest energy units in the physical world to reinterpret photon behavior. The theory posits that photons are composed of World Quanta, where "Internal-Rotation" (inherent at the speed of light, c) provides the frequency baseline for energy, while "Macro-Rotation" (path motion influenced by external fields) determines the photon's trajectory and momentum adjustments. At the same time, the "World Factor" (Φw ) is introduced to quantify the effects of external energy fields on the bending of photon paths and to revise the photon energy formula.

Notably, the theory introduces a negative feedback mechanism, wherein the "World Factor" (Φw) effectively limits the infinite growth of energy as the photon’s propagation speed v approaches c. This resolves the paradox in relativity where an object requires infinite energy to approach the speed of light. This mechanism not only ensures the physical reasonableness of photon energy but also reveals its dynamic behavior in complex environments.

The theory provides a novel framework that unifies quantum and classical physics, offering new insights into the energy, momentum, and mass of photons under complex conditions. It resolves discrepancies in photon behavior under extreme conditions (e.g., in strong gravitational fields) and addresses longstanding challenges in unifying classical and quantum physics. While experimental validation is still pending, this paper outlines feasible experimental schemes to test its core predictions, paving the way for groundbreaking advancements in fundamental physics.

Keywords: World Quantum, Quantum Physics, Classical Physics, Unified Framework, Frequency Model, Negative Feedback Mechanism, Experimental Validation
Integrands of Less-Supersymmetric Yang-Mills at One Loop
Creators: name: Bourjaily, Jacob L.
name: Herrmann, Enrico
name: Langer, Cameron
name: Patatoukos, Kokkimidis
name: Trnka, Jaroslav
name: Zheng, Minshan
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct a prescriptive, bubble power-counting basis of one-loop integrands suitable for representing amplitude integrands in less-supersymmetric Yang-Mills theory. With the exception of massless bubbles, all integrands have unambiguous, leading singularities as coefficients defined in field theory; for the massless bubbles on external legs, we find two natural choices which lead to different integrands that highlight distinct aspects of field theory. For concreteness, we give the all-multiplicity integrands for MHV amplitudes, and the split-helicity amplitude integrand for six-particle NMHV. The basis we construct is mostly pure and is divided into to separately UV- and IR-finite sectors of fixed transcendental weight, resulting in UV- and IR-finite ratio functions of n-particle helicity amplitudes.
description: 42 pages; 5 tables; dozens of figures. Analytic expressions for the basis and all-n MHV amplitudes are available in ancillary files
Biochemical transformations of inorganic nanomedicines in buffers, cell cultures and organisms
Creators: name: Neuer, Anna
name: Herrmann, Inge
name: Gogos, Alexander
Publisher: name: ETH Zurich
Year: 2023

description: The field of nanomedicine is rapidly evolving, with new materials and formulations being reported almost daily. In this respect, inorganic and inorganic-organic composite nanomaterials have gained significant attention. However, the use of new materials in clinical trials and their final approval as drugs has been hampered by several challenges, one of which is the complex and difficult to control nanomaterial chemistry that takes place within the body. Several reviews have summarized investigations on inorganic nanomaterial stability in model body fluids, cell cultures, and organisms, focusing on their degradation as well as the influence of corona formation. However, in addition to these aspects, various chemical reactions of nanomaterials, including phase transformation and/or the formation of new/secondary nanomaterials, have been reported. In this review, we discuss recent advances in our understanding of biochemical transformations of medically relevant inorganic (composite) nanomaterials in environments related to their applications. We provide a refined terminology for the primary reaction mechanisms involved to bridge the gaps between different disciplines involved in this research. Furthermore, we highlight suitable analytical techniques that can be harnessed to explore the described reactions. Finally, we highlight opportunities to utilize them for diagnostic and therapeutic purposes and discuss current challenges and research priorities.
description: ChemRxiv
description: ISSN:2573-2293
World Quantum Theory: A Unified Framework for Quantum and Classical Physics from a Frequency Perspective
Creators: name: yang, Jibon
Publisher: name: YangJiBo    Email:  1264855386@qq.com
Year: 2024
Subjects: subject: Quantum physics

description: World Quantum Theory: A Unified Framework for Quantum and Classical Physics Based on Frequency

Abstract

The propagation speed of photons in a vacuum is commonly assumed to be a constant c, which serves as the foundation for numerous classical and quantum physical theories. However, its applicability in complex fields, such as gravitational or electromagnetic fields, remains controversial. This paper proposes the "World Quantum" theory, introducing the fundamental concept of "World Quanta" as the smallest energy units in the physical world to reinterpret photon behavior. The theory posits that photons are composed of World Quanta, where "Internal-Rotation" (inherent at the speed of light, c) provides the frequency baseline for energy, while "Macro-Rotation" (path motion influenced by external fields) determines the photon's trajectory and momentum adjustments. At the same time, the "World Factor" (Φw ) is introduced to quantify the effects of external energy fields on the bending of photon paths and to revise the photon energy formula.

The theory provides a novel framework that unifies quantum and classical physics, offering new insights into the energy, momentum, and mass of photons under complex conditions. It resolves discrepancies in photon behavior under extreme conditions (e.g., in strong gravitational fields) and addresses longstanding challenges in unifying classical and quantum physics. While experimental validation is still pending, this paper outlines feasible experimental schemes to test its core predictions, paving the way for groundbreaking advancements in fundamental physics.

Keywords: World Quantum, Quantum Physics, Classical Physics, Unified Framework, Frequency Model, Negative Feedback Mechanism, Experimental Validation
Top-Down Anatomy of Flavor Symmetry Breakdown
Creators: name: Baur, Alexander
name: Nilles, Hans Peter
name: Ramos-Sanchez, Saul
name: Trautner, Andreas
name: Vaudrevange, Patrick K. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A top-down approach to the flavor puzzle leads to eclectic flavor groups which include modular and traditional flavor symmetries. Based on examples of semirealistic T2/Z3 orbifold compactifications of heterotic string theory, we discuss the breakdown patterns of the eclectic flavor group via the interplay of vacuum expectation values (vevs) of moduli and flavon fields. This leads to an attractive flavor scheme with various possibilities to obtain "flavor hierarchies" through the alignment of these vevs. Despite the fact that the top-down approach gives strong restrictions for bottom-up flavor model building, it seems to be well suited to provide a realistic flavor pattern for quarks and leptons.
description: 19 pages + citations, 3 figures, 6 tables; v2: statements in introduction clarified, matches version published in PRD
World Quantum Theory: A Unified Framework for Quantum and Classical Physics from a Frequency Perspective
Creators: name: yang, Jibon
Publisher: name: YangJiBo    Email:  1264855386@qq.com
Year: 2024
Subjects: subject: Quantum physics

description: World Quantum Theory: A Unified Framework for Quantum and Classical Physics Based on Frequency

Abstract

The propagation speed of photons in a vacuum is commonly assumed to be a constant c, which serves as the foundation for numerous classical and quantum physical theories. However, its applicability in complex fields, such as gravitational or electromagnetic fields, remains controversial. This paper proposes the "World Quantum" theory, introducing the fundamental concept of "World Quantum" as the smallest energy units in the physical world to reinterpret photon behavior. The theory posits that photons are composed of World Quantum, where "Internal-Rotation" (inherent at the speed of light, c) provides the frequency baseline for energy, while "Macro-Rotation" (path motion influenced by external fields) determines the photon's trajectory and momentum adjustments. At the same time, the "World Factor" (Φw ) is introduced to quantify the effects of external energy fields on the bending of photon paths and to revise the photon energy formula.

Notably, the theory naturally exhibits a negative feedback mechanism in the solution for the total energy of particles forming the World Quantum. In this context, the "World Factor" (Φw) effectively limits the infinite growth of energy as the particle’s propagation speed v approaches c. This resolves the paradox in relativity, where an object requires infinite energy to approach the speed of light. This mechanism not only ensures the physical reasonableness of the particle’s energy but also reveals its dynamic behavior in complex environments.

The theory provides a novel framework that unifies quantum and classical physics, offering new insights into the energy, momentum, and mass of photons under complex conditions. It resolves discrepancies in photon behavior under extreme conditions (e.g., in strong gravitational fields) and addresses longstanding challenges in unifying classical and quantum physics. While experimental validation is still pending, this paper outlines feasible experimental schemes to test its core predictions, paving the way for groundbreaking advancements in fundamental physics.

Keywords: World Quantum, Quantum Physics, Classical Physics, Unified Framework, Frequency Model, Negative Feedback Mechanism, Experimental Validation
Nonperturbative Negative Geometries: Amplitudes at Strong Coupling and the Amplituhedron
Creators: name: Arkani-Hamed, Nima
name: Henn, Johannes
name: Trnka, Jaroslav
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The amplituhedron determines scattering amplitudes in planar ${\cal N}=4$ super Yang-Mills by a single "positive geometry" in the space of kinematic and loop variables. We study a closely related definition of the amplituhedron for the simplest case of four-particle scattering, given as a sum over complementary "negative geometries", which provides a natural geometric understanding of the exponentiation of infrared (IR) divergences, as well as a new geometric definition of an IR finite observable ${\cal F}(g,z)$ - dually interpreted as the expectation value of the null polygonal Wilson loop with a single Lagrangian insertion - which is directly determined by these negative geometries. This provides a long-sought direct link between canonical forms for positive (negative) geometries, and a completely IR finite post-loop-integration observable depending on a single kinematical variable $z$, from which the cusp anomalous dimension $Γ_{\rm cusp}(g)$ can also be straightforwardly obtained. We study an especially simple class of negative geometries at all loop orders, associated with a "tree" structure in the negativity conditions, for which the contributions to ${\cal F}(g,z)$ and $Γ_{\rm cusp}$ can easily be determined by an interesting non-linear differential equation immediately following from the combinatorics of negative geometries. This lets us compute these "tree" contributions to ${\cal F}(g,z)$ and $Γ_{\rm cusp}$ for all values of the 't Hooft coupling. The result for $Γ_{\rm cusp}$ remarkably shares all main qualitative characteristics of the known exact results obtained using integrability.
description: 38 pages, 45 figures
ARID1a in Upper Tract Urothelial Carcinomas
Creators: name: Chaux, Alcides
Publisher: name: figshare
Year: 2016
Subjects: subject: 111201 Cancer Cell Biology
subject: FOS: Clinical medicine
subject: 111202 Cancer Diagnosis
subject: 111203 Cancer Genetics
subject: Biomarkers
subject: 110705 Humoural Immunology and Immunochemistry
subject: 111207 Molecular Targets
subject: 110312 Nephrology and Urology
subject: 111299 Oncology and Carcinogenesis not elsewhere classified
subject: 110316 Pathology (excl. Oral Pathology)
subject: 111209 Solid Tumours

description: ARID1a in Upper Tract Urothelial Carcinomas
Vereinigung Akademischer Mittelbau Zürich: Die ersten 50 Jahre
Creators: name: Winterberger, Georg
name: Albisser, Ariane
name: Völker, Harald
Publisher: name: ETH Zurich
Year: 2023
Subjects: Universität Zürich
Universitätsgeschichte
VAUZ
Mittelbauförderung
wissenschaftliche Assistenz
akademischer Nachwuchs
Postdoc
Mentoring
Mitbestimmungsrecht
Gleichstellung

description: Die VAUZ ist 50 Jahre alt geworden! Ein Grund zum Feiern – aber auch zum Reflektieren. Aber wie wird eine Publikation zum Jubiläum gestaltet, damit sie für die Leserschaft sowohl die aktuelle Situation ansprechend und spannend beleuchtet als auch der Geschichte genügend Gewicht gibt? Das Herausgeberteam hat sich der Herausforderung dieses Spagats gestellt: Aktuelle Vertreterinnen und Vertreter von Mittelbauvereinigungen sowie ehemalige und aktuelle Präsidentinnen und Präsidenten der VAUZ kommen persönlich zu Wort und erzählen uns ihre Sichtweise auf die VAUZ und die Situation des Mittelbaus in der Schweiz. Ausserdem konnte ein reichhaltiger, historischer Schatz gehoben werden, der in den Aktenschränken des VAUZ-Büros geschlummert hatte.
Die Geschichte der VAUZ, die eng verwoben ist mit der Universität Zürich einerseits und der Situation des Mittelbaus andererseits, erhält ihren Platz in dieser Publikation – als Zeitdokument für spätere Generationen, die sich der Geschichte der VAUZ annehmen und vielleicht einmal das 100-jährige Jubiläum dieser Vereinigung vorbereiten werden.
description: ISBN:978-3-7281-4149-1
description: ISBN:978-37281-4148-4
The reheating constraints to natural inflation in Horndeski gravity
Creators: name: Chien, Chen-Hsu
name: Koh, Seoktae
name: Tumurtushaa, Gansukh
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: For the subclass of Horndeski theory of gravity, we investigate the effects of reheating on the predictions of natural inflation. In the presence of derivative self-interaction of a scalar field and its kinetic coupling to the Einstein tensor, the gravitational friction to inflaton dynamics is enhanced. As a result, the tensor-to-scalar ratio $r$ is suppressed. We place the observational constraints on a natural inflation model and show that the model is now consistent with the observational data for some plausible range of the model parameter $Δ$, mainly due to the suppressed tensor-to-scalar ratio. To be consistent with the data at the $1σ$ ($68\%$ confidence) level, a slightly longer $N_k\gtrsim60$ duration of inflation than usually assumed is preferred. Since the duration of inflation, for any specific inflaton potential, is related to reheating parameters, including the duration $N_{re}$, temperature $T_{re}$, and equation-of-state $ω_{re}$ parameter during reheating, we imposed the effects of reheating to the inflationary predictions to put further constraints. The results show that the duration of inflation $N_k$ is affected by considerations of reheating, mainly by the $ω_{re}$ and $T_{re}$ parameters. If reheating occurs instantaneously for which $N_{re}=0$ and $ω_{re}=1/3$, the duration of inflation is estimated to be $N_k\simeq57$, where the exact value is less sensitive to the model parameter $Δ$ compatible with the CMB data. The duration of inflation is longer (or shorter) than $N_k\simeq57$ for the equation of state larger (or smaller) than 1/3 hence $N_{re}\neq0$. The maximum temperature at the end of reheating is $T_{re}^\text{max}\simeq3\times 10^{15}$ GeV, which corresponds to the instantaneous reheating. The low reheating temperature, as low as a few MeV, is also possible when $ω_{re}$ is closer to $1/3$.
description: 11 pages, 3 figures
World Quantum Theory: A Unified Framework for Quantum and Classical Physics from a Frequency Perspective
Creators: name: yang, Jibon
Publisher: name: YangJiBo    Email:  1264855386@qq.com
Year: 2025
Subjects: subject: Quantum physics

description: World Quantum Theory: A Unified Framework for Quantum and Classical Physics Based on Frequency

Abstract

In classical and quantum physics, the speed of light c is often considered a constant, serving as a foundational assumption. However, its applicability under complex energy fields, such as gravitational or electromagnetic fields, remains an area of ongoing debate. This paper introduces the "World Quantum" theory, proposing that photons are composed of fundamental energy units called "World Quanta." The theory suggests that the frequency of the World Quantum's "Internal-Rotation" (inherent at the speed of light c) provides a baseline for energy, while "Macro-Rotation" (the path influenced by external fields) governs the photon’s trajectory and momentum.

The theory introduces the concept of the "World Factor" (Φw), a new parameter that quantifies the effects of external energy fields on photon path bending, allowing for a revised photon energy formula. Notably, the theory includes a negative feedback mechanism that prevents infinite energy growth as a particle’s speed approaches c, addressing the paradox in relativity, which asserts that infinite energy is required for an object to reach light speed.

This unified framework offers new insights into photon behavior, energy, momentum, and mass in complex environments, resolving inconsistencies observed under extreme conditions, such as in strong gravitational fields. While experimental validation remains a goal, potential experimental schemes are proposed to test the theory’s core predictions, providing a pathway for future advancements in understanding the relationship between quantum and classical physics.

Keywords: World Quantum, Quantum Physics, Classical Physics, Unified Framework, Frequency Model, Negative Feedback Mechanism, Experimental Validation
World Quantum Theory: A Unified Framework for Quantum and Classical Physics from a Frequency Perspective
Creators: name: yang, Jibo
name: Valamontes Center For Scientific Publication
Publisher: name: YangJiBo    Email:  1264855386@qq.com
Year: 2025
Subjects: subject: Quantum physics

description: World Quantum Theory: A Unified Framework for Quantum and Classical Physics Based on Frequency

Abstract

In classical and quantum physics, the speed of light c is often considered a constant, serving as a foundational assumption. However, its applicability under complex energy fields, such as gravitational or electromagnetic fields, remains an area of ongoing debate. This paper introduces the "World Quantum" theory, proposing that photons are composed of fundamental energy units called "World Quanta." The theory suggests that the frequency of the World Quantum's "Internal-Rotation" (inherent at the speed of light c) provides a baseline for energy, while "Macro-Rotation" (the path influenced by external fields) governs the photon’s trajectory and momentum.

The theory introduces the concept of the "World Factor" (Φw), a new parameter that quantifies the effects of external energy fields on photon path bending, allowing for a revised photon energy formula. Notably, the theory includes a negative feedback mechanism that prevents infinite energy growth as a particle’s speed approaches c, addressing the paradox in relativity, which asserts that infinite energy is required for an object to reach light speed.

This unified framework offers new insights into photon behavior, energy, momentum, and mass in complex environments, resolving inconsistencies observed under extreme conditions, such as in strong gravitational fields. While experimental validation remains a goal, potential experimental schemes are proposed to test the theory’s core predictions, providing a pathway for future advancements in understanding the relationship between quantum and classical physics.

Keywords: World Quantum, Quantum Physics, Classical Physics, Unified Framework, Frequency Model, Negative Feedback Mechanism, Experimental Validation
Liquid phase synthesis of aromatic poly(azomethine)s, their physicochemical properties, and measurement of ex situ electrical conductivity of pelletized powdered samples
Creators: name: Hafeez, Abdul
name: Zareen Akhter
name: Gallagher, John F.
name: Humaira M. Siddiqui
Publisher: name: Taylor & Francis
Year: 2016
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: Aromatic bis-aldehydes have been used as building blocks in the synthesis of polyazomethines (a class of conjugated Schiff bases) and their physicochemical properties have been studied. Six dialdehydes have been synthesized, 3a-3f, via etherification reaction between aromatic diols (2a-2f) and 4-fluorobenzaldehyde (1) (see Scheme 1), and then polymerized with 1,4-phenylenediamine (4a) and 4,4′-oxydianiline (4b) (see Scheme 2). The chemical structures of the bis-aldehydes were elucidated by FTIR, 1H NMR and 13C NMR spectroscopic studies, elemental analysis and single crystal whereas the polymers were studied by FTIR and NMR spectroscopy. Their physicochemical properties were examined by their inherent viscosity, organosolubility, differential scanning calorimetry, X-ray powder diffraction, thermogravimetric analysis, solvatochromism, and photoluminescence. We report the electrical conductivity of each polymer measured by the four probe method. The results indicate that the electrical conductivity of polymers lies in range 0.019–0.051 mScm−1 which is reasonably higher than any reported value.
TOCA: A Tenant-Oriented Control Architecture for Multi-Domain Cloud Networks
Creators: name: LU, Huang
Publisher: name: figshare
Year: 2016
Subjects: subject: 80503 Networking and Communications
subject: FOS: Computer and information sciences

description: This is the "Report Version" of the paper presented at the conference, APNOMS, 2016; for personal study. Publisher reference: Proc. of the 18th Asia-Pacific Network Operations and Management Symposium (APNOMS), IEEE ComSoc press, 2016. DOI:  10.1109/APNOMS.2016.7737282
Proximal nitrogen reduces the fluorescence quantum yield of nitrogen-vacancy centres in diamond
Creators: name: Capelli, Marco
name: Lindner, Lukas
name: Luo, Tingpeng
name: Jeske, Jan
name: Abe, Hiroshi
name: Onoda, Shinobu
name: Ohshima, Takeshi
name: Johnson, Brett
name: Simpson, David A.
name: Stacey, Alastair
name: Reineck, Philipp
name: Gibson, Brant C.
name: Greentree, Andrew D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The nitrogen-vacancy colour centre in diamond is emerging as one of the most important solid-state quantum systems. It has applications to fields including high-precision sensing, quantum computing, single photon communication, metrology, nanoscale magnetic imaging and biosensing. For all of these applications, a high quantum yield of emitted photons is desirable. However, diamond samples engineered to have high densities of nitrogen-vacancy centres show levels of brightness varying significantly within single batches, or even within the same sample. Here we show that nearby nitrogen impurities quench emission of nitrogen-vacancy centres via non-radiative transitions, resulting in a reduced fluorescence quantum yield. We monitored the emission properties of nitrogen-vacancy centre ensembles from synthetic diamond samples with different concentrations of nitrogen impurities. While at low nitrogen densities of 1.81 ppm we measured a lifetime of 13.9 ns, we observed a strong reduction in lifetime with increasing nitrogen density. We measure a lifetime as low as 4.4 ns at a nitrogen density of 380 ppm. The change in lifetime matches a reduction in relative fluorescence quantum yield from 77.4 % to 32 % with an increase in nitrogen density from 88 ppm to 380 ppm, respectively. These results will inform the conditions required to optimise the properties of diamond crystals devices based on the fluorescence of nitrogen-vacancy centres. Furthermore, this work provides insights into the origin of inhomogeneities observed in high-density nitrogen-vacancy ensembles within diamonds and nanodiamonds.
description: 22 pages, 14 figures (4 figures in the main text, 10 figures in the supplementary information)
Quasar UV Luminosity Function at $3.5
Creators: name: Pan, Zhiwei
name: Jiang, Linhua
name: Fan, Xiaohui
name: Wu, Jin
name: Yang, Jinyi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a well-designed sample of more than 1000 type 1 quasars at $3.50.5$. The evolution of the QLFs from $z\sim5$ to $3.5$ can be described by a pure density evolution model ($\propto10^{kz}$) and the parameter $k$ is similar to that at $5
description: Submitted to ApJ