Results 41 to 50 of about 807,423 (184)
A gauge-invariant, rotor Hamiltonian from dual variables of 3D U(1) gauge theory [PDF]
Phys. Rev. D 99, 074502 (2019), 2018 We present a tensor formulation for free compact electrodynamics in three Euclidean dimensions and use this formulation to construct a quantum Hamiltonian in the continuous-time limit. Gauge-invariance is maintained at every step and the resulting Hamiltonian can be written as a rotor model.
arxiv +1 more source
SciPost PhysicsEmergent gauge theories take a prominent role in the description of quantum matter, supporting deconfined phases with topological order and fractionalized excitations.
Urban F. P. Seifert, Sergej Moroz
doaj +1 more source
Lattice Gauge Theories and String Dynamics in Rydberg Atom Quantum Simulators
Physical Review X, 2020 Gauge theories are the cornerstone of our understanding of fundamental interactions among elementary particles. Their properties are often probed in dynamical experiments, such as those performed at ion colliders and high-intensity laser facilities ...
Federica M. Surace +5 more
doaj +1 more source
Quantum simulation of the Abelian-Higgs lattice gauge theory with ultracold atoms
New Journal of Physics, 2017 We present a quantum simulation scheme for the Abelian-Higgs lattice gauge theory using ultracold bosonic atoms in optical lattices. The model contains both gauge and Higgs scalar fields, and exhibits interesting phases related to confinement and the ...
Daniel González-Cuadra +2 more
doaj +1 more source
Aufbau principle and singlet‐triplet gap in spherical Hooke atoms
International Journal of Quantum Chemistry, Volume 123, Issue 3, February 5, 2023., 2023 The singlet‐triplet gap for three dimensional Hooke atoms is characterized using high‐level quantum methods with optimized basis sets. The effect of the confinement potential and screening effects is discussed. We have found that the triplet‐singlet gap as a function of the numbers of electrons can be rationalized with the following orbital ordering 1s<
Xabier Telleria‐Allika +5 more
wiley +1 more source
Improving the Lattice QCD Hamiltonian [PDF]
Nucl.Phys.Proc.Suppl. 63 (1998) 931-933, 1997 Improvement of the Hamiltonian in lattice gauge theory is considered. We give explicit expressions for classical improvement and discuss also quantum corrections.
arxiv +1 more source
Predicting 2D Crystal Packing in Thin Films of Small Molecule Organic Materials
Advanced Functional Materials, EarlyView.A computational method is proposed for predicting the 2D molecular packing in crystalline thin films of flexible organic molecules. The approach employs a grid search for molecular arrangements, achieving accurate predictions of 2D packing motifs with strongly reduced computational costs.
Alexey O. Gudovannyy +6 more
wiley +1 more source
Projective spacetime symmetry of spacetime crystals
Communications Physics, 2023 Wigner’s seminal work on the Poincaré group revealed one of the fundamental principles of quantum theory: symmetry groups are projectively represented. The condensed-matter counterparts of the Poincaré group could be the spacetime groups of periodically ...
Zheng Zhang, Z. Y. Chen, Y. X. Zhao
doaj +1 more source
A Gauge-fixed Hamiltonian for Lattice QCD [PDF]
Phys.Rev. D47 (1993) 3543-3545, 1992 We study the gauge fixing of lattice QCD in 2+1 dimensions, in the Hamiltonian formulation. The technique easily generalizes to other theories and dimensions. The Hamiltonian is rewritten in terms of variables which are gauge invariant except under a single global transformation.
arxiv +1 more source
Advanced Functional Materials, EarlyView.Carboxyl‐functionalized graphene quantum dots (cGQDs) exhibit high singlet oxygen quantum yield due to strong spin–orbit coupling. cGQDs achieve minimum bactericidal concentration of only 0.4 µg mL−1 against S. aureus under low‐intensity illumination.
Muhammad Hassnain +10 more
wiley +1 more source