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961
Feynman-diagrams approach to the quantum Rabi model for ultrastrong cavity QED: stimulated emission and reabsorption of virtual particles dressing a physical excitation
Published 2017-01-01“…In quantum field theory, bare particles are dressed by a cloud of virtual particles to form physical particles. …”
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962
Creation of entangled atomic states by an analogue of the Dynamical Casimir effect
Published 2018-01-01“…If the boundary conditions of the quantum vacuum are changed in time, quantum field theory predicts that real, observable particles can be created in the initially empty modes. …”
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963
Landauer’s Princple for Fermionic Fields in One-Dimensional Bags
Published 2023-08-01“…In this paper, we follow this line of research on the the validity of the concepts in quantum field theory by studying Landauer’s principle for a Dirac field interacting perturbatively with an Unruh–DeWitt detector in a <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>1</mn><mo>+</mo><mn>1</mn></mrow></semantics></math></inline-formula>-dimensional MIT bag cavity. …”
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964
Categorical representation learning and RG flow operators for algorithmic classifiers
Published 2023-01-01“…Borrowing ideas from the theory of renormalization group (RG) flows in quantum field theory, holographic duality, and hyperbolic geometry and combining them with neural ordinary differential equation techniques, we construct a new algorithmic natural language processing architecture, called the RG-flow categorifier or for short the RG categorifier, which is capable of data classification and generation in all layers. …”
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965
Investigating Lorentz Invariance Violation with the long baseline experiment P2O
Published 2023-01-01“…Abstract One of the basic propositions of quantum field theory is Lorentz invariance. The spontaneous breaking of Lorentz symmetry at a high energy scale can be studied at low energy extensions like the Standard model in a model-independent way through effective field theory (EFT). …”
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966
Two-Semester Physics Course for Bachelors at Technical University
Published 2019-09-01“…The following conceptual scheme of the course is proposed: elementary physics as axiomatic science, statistical physics, quantum physics, quantum field theory (general concepts). The experience of the development and using of electronic educational materials (lecture presentations, electronic summaries of lectures and exercises) at ITMO University is analyzed. …”
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967
Vacuum Polarization in a Zero-Width Potential: Self-Adjoint Extension
Published 2021-05-01“…The “mathematical” approach implies the self-adjoint extension technique. In the Quantum-Field-Theory framework we consider the massless scalar field in a 3-dimensional Euclidean space with an extracted point. …”
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968
Fusion rules and shrinking rules of topological orders in five dimensions
Published 2023-11-01“…Abstract As a series of work about 5D (spacetime) topological orders, here we employ the path-integral formalism of 5D topological quantum field theory (TQFT) established in Zhang and Ye, JHEP 04 (2022) 138 to explore non-Abelian fusion rules, hierarchical shrinking rules and quantum dimensions of particle-like, loop-like and membrane-like topological excitations in 5D topological orders. …”
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969
WKB Approaches to Restore Time in Quantum Cosmology: Predictions and Shortcomings
Published 2022-10-01“…This way, we are considering the very fundamental problem of non-unitary morphology of the quantum gravity corrections to quantum field theory discussing some proposed reformulations. …”
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970
Reciprocal of the CPT theorem
Published 2024-03-01“…We show that in a Lorentz invariant quantum field theory described by its Lagrangian, CPT-violating interaction alone does not split the masses of an elementary particle and its antiparticle but breaks only the equality of lifetimes, magnetic moments and cross sections. …”
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971
Non-Equilibrium <i>ϕ</i><sup>4</sup> Theory in a Hierarchy: Towards Manipulating Holograms in Quantum Brain Dynamics
Published 2023-01-01“…We describe non-equilibrium <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mi>ϕ</mi><mn>4</mn></msup></semantics></math></inline-formula> theory in a hierarchical manner to develop a method for manipulating coherent fields as a toy model of introducing control into Quantum Field Theory (QFT) of the brain, which is called Quantum Brain Dynamics (QBD). …”
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972
Symmetries and Their Breaking in the Fundamental Laws of Physics
Published 2020-08-01“…The cancellation of gauge anomalies, which would invalidate the gauge symmetry of the quantum field theory, led to Quark–Lepton Symmetry. Neutrinos were postulated in order to save the conservation laws of energy and angular momentum in nuclear beta decay. …”
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973
Nonglobal correlations in collider physics
Published 2016“…This procedure illuminates the source of nonglobal correlations and has connections more broadly to fundamental quantities in quantum field theory.…”
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974
Hydrodynamics with parametric slowing down and fluctuations near the critical point
Published 2018“…We find that the key element of the new formalism—the extended entropy taking into account the off-equilibrium fluctuations—is remarkably similar to the 2PI action in the quantum field theory. We show how the new Hydro+ formalism reproduces two major effects of critical fluctuations on the bulk evolution: the strong frequency dependence of the anomalously large bulk viscosity as well as the stiffening of the equation of state with an increasing frequency or wave number. …”
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975
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976
Machine Learning and Variational Algorithms for Lattice Field Theory
Published 2022“…Discretizing fields on a spacetime lattice is the only known general and non-perturbative regulator for quantum field theory. The lattice formulation has, for example, played an important role in predicting properties of QCD in the strongly coupled regime, where perturbative methods break down. …”
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977
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978
Double Neutron Star Mergers: Are Late-time Radio Signals Overestimated?
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979
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980
Renormalizing the vacuum energy in cosmological spacetime: implications for the cosmological constant problem
Published 2022-06-01“…Abstract The renormalization of the vacuum energy in quantum field theory (QFT) is usually plagued with theoretical conundrums related not only with the renormalization procedure itself, but also with the fact that the final result leads usually to very large (finite) contributions incompatible with the measured value of $$\Lambda $$ Λ in cosmology. …”
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