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Quantum Field Theory

Universe, 2023
This Special Issue on quantum field theory presents work covering a wide and topical range of subjects mainly within the area of interacting 4D quantum field theories subject to certain backgrounds [...]
Ralf Hofmann
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A Gentle Introduction to Lattice Field Theory [PDF]

Entropy
The principles of Lattice Field Theory (LFT), in particular Lattice Gauge Theory (LGT), are explained for a nonspecialist audience. We describe some of the successes of the program; we also discuss the relationship between LFT and Quantum Cellular ...
Erhard Seiler
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Linear Superposition as a Core Theorem of Quantum Empiricism

Universe, 2022
Clarifying the nature of the quantum state |Ψ⟩ is at the root of the problems with insight into counter-intuitive quantum postulates. We provide a direct—and math-axiom free—empirical derivation of this object as an element of a vector space ...
Yurii V. Brezhnev
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Anyon condensation: coherent states, symmetry enriched topological phases, Goldstone theorem, and dynamical rearrangement of symmetry

Journal of High Energy Physics, 2022
Although the mathematics of anyon condensation in topological phases has been studied intensively in recent years, a proof of its physical existence is tantamount to constructing an effective Hamiltonian theory. In this paper, we concretely establish the
Yuting Hu, Zichang Huang, Ling-Yan Hung, Yidun Wan   +3 more
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Extend the Levin-Wen model to two-dimensional topological orders with gapped boundary junctions

Journal of High Energy Physics, 2022
A realistic material may possess defects, which often bring the material new properties that have practical applications. The boundary defects of a two-dimensional topologically ordered system are thought of as an alternative way of realizing topological
Hongyu Wang, Yuting Hu, Yidun Wan
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Unfree gauge symmetry in the BV formalism

European Physical Journal C: Particles and Fields, 2019
The BV formalism is proposed for the theories where the gauge symmetry parameters are unfree, being constrained by differential equations.
D. S. Kaparulin, S. L. Lyakhovich
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Coulomb Problem for Classical Spinning Particles

Universe, 2023
We consider the motion of a weakly relativistic charged particle with an arbitrary spin in central potential e/r in terms of classical mechanics. We show that the spin–orbital interaction causes the precession of the plane of orbit around the vector of ...
Dmitry S. Kaparulin, Nikita A. Sinelnikov   +1 more
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Calculation of the Acoustic Spectrum of a Cylindrical Vortex in Viscous Heat-Conducting Gas Based on the Navier–Stokes Equations

Computation, 2016
An extremely interesting problem in aero-hydrodynamics is the sound radiation of a single vortical structure. Currently, this type of problem is mainly considered for an incompressible medium. In this paper a method was developed to take into account the
Tatiana Petrova, Fedor Shugaev
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Light neutralino dark matter in U(1)XSSM

Nuclear Physics B, 2021
The U(1)X extension of the minimal supersymmetric standard model (MSSM) is called as U(1)XSSM with the local gauge group SU(3)C×SU(2)L×U(1)Y×U(1)X. U(1)XSSM has three singlet Higgs superfields beyond MSSM.
Shu-Min Zhao, Guo-Zhu Ning, Jing-Jing Feng, Hai-Bin Zhang, Tai-Fu Feng, Xing-Xing Dong   +5 more
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Out-of-horizon correlations following a quench in a relativistic quantum field theory

Journal of High Energy Physics, 2020
One of the manifestations of relativistic invariance in non-equilibrium quantum field theory is the “horizon effect” a.k.a. light-cone spreading of correlations: starting from an initially short-range correlated state, measurements of two observers at ...
I. Kukuljan, S. Sotiriadis, G. Takács
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