Article
Physics, Multidisciplinary
Javier Villarroel
Summary: The article discusses the movement of Brownian particles in one-dimensional space and studies how resetting affects the probability of particle escape and the distribution of exit times. According to the golden ratio, resetting activity may either increase or decrease the time for escape from a region.
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
(2022)
Article
Physics, Multidisciplinary
Tomohiro Hashizume, Jad Halimeh, Philipp Hauke, Debasish Banerjee
Summary: The exploration of phase diagrams of strongly interacting gauge theories coupled to matter in lower dimensions is important for understanding important phenomena in Nature. This study focuses on a U(1) quantum link lattice gauge theory in (2 + 1)-d and reveals a rich phase diagram with exotic phases and interesting phase transitions, making it a potential guide for future quantum simulation experiments.
Article
Chemistry, Multidisciplinary
Shun Kimura, Shojiro Kimura, Ken Kato, Yoshio Teki, Hiroshi Nishihara, Tetsuro Kusamoto
Summary: This study investigated the effect of magnetic field on emission in organic radicals, revealing the importance of spin degrees of freedom in ground-state open-shell molecules for achieving magnetic-field-controlled molecular photofunctions.
Article
Chemistry, Multidisciplinary
Kai Zhang, Marie-Christine Hanf, Romain Bernard, Yves Borensztein, Hervei Cruguel, Andrea Resta, Yves Garreau, Alina Vlad, Alessandro Coati, Davide Sciacca, Bruno Grandidier, Mickael Derivaz, Carmelo Pirri, Philippe Sonnet, Reigis Stephan, Geoffroy Prevot
Summary: Through scanning tunneling microscopy (STM), surface X-ray diffraction (SXRD), and density functional theory, we have revealed a Ge-induced (root 109 x root 109)R +/- 24.5 degrees reconstruction on Ag(111). We have demonstrated the possibility of solving a giant surface reconstruction using SXRD and STM. The reconstructed structure consists of Ge pentagons, hexagons, and heptagons, with the inclusion of a few dispersed Ag atoms.
Article
Chemistry, Physical
Raghavendra Meena, Guanna Li, Michele Casula
Summary: Through quantum Monte Carlo calculations, we studied the ground-state properties of the narrowest zigzag graphene nanoribbon and found that it exhibits correlated behavior and has an antiferromagnetic ground state. The calculated antiferromagnetic stabilization energy and magnetization are sizeable, suggesting the persistence of antiferromagnetic correlations above room temperature. These results have significant implications for the study of graphene nanoribbons and similar systems.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Verena A. Neufeld, Hong-Zhou Ye, Timothy C. Berkelbach
Summary: Metallic solids are an important class of materials that have not been extensively studied using wave function-based electronic structure theories. In this study, we used optimized Gaussian basis sets and coupled-cluster theory to investigate the structure of solid lithium and aluminum. Our results, which were compared to experimental values, showed accuracy comparable to common density functionals. Additionally, two approximate improvements to the coupled-cluster method were found to enhance the results.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Mathematics, Applied
Jiabin Zuo, Khaled Khachnaoui, J. Vanterler da C. Sousa
Summary: In this paper, the author investigates the existence of ground state solutions for an electromagnetic Schrodinger equation in exterior domains. The main technical approach involves the joint use of the Nehari manifold method, variational methods, and topological methods.
COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION
(2023)
Review
Physics, Multidisciplinary
Marcela Pelaez, Urko Reinosa, Julien Serreau, Matthieu Tissier, Nicolas Wschebor
Summary: Lattice simulations in the Landau gauge have shown that the coupling constant in the QCD sector remains finite and moderate at all scales, while the gluon propagator reaches a finite nonzero value at vanishing momentum. Studies have successfully described infrared QCD dynamics using the perturbative Curci-Ferrari model, with calculations showing good agreement with lattice simulations. The approach has also been applied to scenarios with dynamical quarks, showing controlled approximation schemes can account for chiral symmetry breaking. Applications to nonzero temperature and chemical potential have also been explored.
REPORTS ON PROGRESS IN PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Santanu Pakhira, Thomas Heitmann, S. X. M. Riberolles, B. G. Ueland, R. J. McQueeney, D. C. Johnston, David Vaknin
Summary: The study reports the magnetic properties of EuMg2Bi2, finding that it exhibits ferromagnetic intraplane ordering and antiferromagnetic alignment between adjacent layers at lower temperatures.
Article
Astronomy & Astrophysics
Yu-Ying He, Xin-Jian Wen
Summary: The thermodynamics of finite size quark matter in the quasiparticle model is studied. An effective bag function is used to consider the medium effect to the confinement. Analytic surface tensions in strong magnetic fields are obtained using the multiple reflection expansion, showing anisotropic structures with splitting between longitudinal and transverse surface tensions. The anisotropy of surface tension can be enhanced by higher magnetic fields, and the surface tension is modified by an additional term related to the bag function.
Article
Chemistry, Physical
Lorenzo Caprini, Alexander R. Sprenger, Hartmut Loewen, Rene Wittmann
Summary: We propose a new model that generates a complete family of descendants flexibly. This model unifies two commonly used models for active matter, revealing a deep stochastic relationship between them. It provides more suitable models for various active matter systems and explains their characteristic distribution features. We evaluate the model in a reference example and demonstrate the transition in the shape of positional density distribution.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Astronomy & Astrophysics
Oliver Friedrich, Anik Halder, Aoife Boyle, Cora Uhlemann, Dylan Britt, Sandrine Codis, Daniel Gruen, ChangHoon Hahn
Summary: This article studies the connection between matter density and its tracers from the perspective of probability density function (PDF), including the conditional expectation value.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Optics
Tobias Ilg, Hans Peter Buechler
Summary: We study the behavior of the excitation spectrum across the quantum phase transition from a superfluid to a supersolid phase of a dipolar Bose gas in one dimension. Using an effective Hamiltonian that includes beyond-mean-field effects, we analyze the system based on Bogoliubov theory with multiple order parameters. Our results show that the supersolid phase exhibits a stable excitation spectrum with Goldstone modes and an amplitude mode in the low-energy regime, and the transition into the supersolid phase is driven by the roton instability in a parameter regime achievable for dysprosium atoms.
Article
Physics, Multidisciplinary
Jing-Yu Zhao, Shuai A. Chen, Hao-Kai Zhang, Zheng-Yu Weng
Summary: This study explores the ground state of two holes in the t-J model using VMC, finding that the holes strongly attract each other to form a pairing state, with the pairing mechanism attributed to the quantum phase strings created by the hopping of holes.
Article
Materials Science, Multidisciplinary
Ayoub Aouina, Matteo Gatti, Siyuan Chen, Shiwei Zhang, Lucia Reining
Summary: In this work, accurate exchange-correlation potentials for Si and NaCl are determined based on the ground-state densities obtained from auxiliary field quantum Monte Carlo calculations. The study shows that these potentials can be rationalized as an ensemble of a few local functions of the density, characterized by the gradient of the density and the local kinetic energy density. By using these accurate potentials, the KS band structure can be obtained with high accuracy. The findings also confirm the stability of the KS system and question the meaning of details of the potentials.
Article
Physics, Multidisciplinary
Olaf Krueger, Dirk Kreimer
Article
Mathematics, Applied
Dirk Kreimer, Karen Yeats
MATHEMATICAL PHYSICS ANALYSIS AND GEOMETRY
(2017)
Article
Astronomy & Astrophysics
Henry Kissler, Dirk Kreimer
Article
Physics, Multidisciplinary
Dirk Kreimer, Matthias Sars, Walter D. van Suijlekom
Article
Physics, Multidisciplinary
Lutz Klaczynski, Dirk Kreimer
Article
Mathematics, Applied
Adrian Tanasa, Dirk Kreimer
JOURNAL OF NONCOMMUTATIVE GEOMETRY
(2013)
Article
Physics, Mathematical
Dirk Kreimer, Andrea Velenich
LETTERS IN MATHEMATICAL PHYSICS
(2013)
Article
Physics, Mathematical
Francis Brown, Dirk Kreimer
LETTERS IN MATHEMATICAL PHYSICS
(2013)
Article
Astronomy & Astrophysics
A. Youssef, D. Kreimer
Article
Astronomy & Astrophysics
Dirk Kreimer, Karen Yeats
Article
Astronomy & Astrophysics
J. A. Gracey, H. Kissler, D. Kreimer
Proceedings Paper
Mathematics, Applied
Dirk Kreimer
FEYNMAN AMPLITUDES, PERIODS AND MOTIVES
(2015)
Article
Mathematics, Applied
Dirk Kreimer, Karen Yeats
ELECTRONIC JOURNAL OF COMBINATORICS
(2013)
Proceedings Paper
Physics, Particles & Fields
D. Kreimer
NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS
(2010)
Article
Mathematics, Applied
Spencer Bloch, Dirk Kreimer
COMMUNICATIONS IN NUMBER THEORY AND PHYSICS
(2010)