Feynman-diagrams approach to the quantum Rabi model for ultrastrong cavity QED: stimulated emission and reabsorption of virtual particles dressing a physical excitation by Omar Di Stefano, Roberto Stassi, Luigi Garziano, Anton Frisk Kockum, Salvatore Savasta, Franco Nori

“…In quantum field theory, bare particles are dressed by a cloud of virtual particles to form physical particles. …”
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Creation of entangled atomic states by an analogue of the Dynamical Casimir effect by K Lange, J Peise, B Lücke, T Gruber, A Sala, A Polls, W Ertmer, B Juliá-Díaz, L Santos, C Klempt

“…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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Landauer’s Princple for Fermionic Fields in One-Dimensional Bags by Yu-Song Cao, Yanxia Liu, Rong Zhang

“…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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Categorical representation learning and RG flow operators for algorithmic classifiers by Artan Sheshmani, Yi-Zhuang You, Wenbo Fu, Ahmadreza Azizi

“…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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Investigating Lorentz Invariance Violation with the long baseline experiment P2O by Nishat Fiza, Nafis Rezwan Khan Chowdhury, Mehedi Masud

“…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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Two-Semester Physics Course for Bachelors at Technical University by S. В. Pereslegin, A. A. Korolev, S. A. Kurashova

“…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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Vacuum Polarization in a Zero-Width Potential: Self-Adjoint Extension by Yuri V. Grats, Pavel Spirin

“…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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Fusion rules and shrinking rules of topological orders in five dimensions by Yizhou Huang, Zhi-Feng Zhang, Peng Ye

“…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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WKB Approaches to Restore Time in Quantum Cosmology: Predictions and Shortcomings by Giulia Maniccia, Mariaveronica De Angelis, Giovanni Montani

“…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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Reciprocal of the CPT theorem by Luis Álvarez-Gaumé, Moshe M. Chaichian, Markku A. Oksanen, Anca Tureanu

“…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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Non-Equilibrium <i>ϕ</i>⁴ Theory in a Hierarchy: Towards Manipulating Holograms in Quantum Brain Dynamics by Akihiro Nishiyama, Shigenori Tanaka, Jack A. Tuszynski

“…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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Symmetries and Their Breaking in the Fundamental Laws of Physics by Jose Bernabeu

“…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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Nonglobal correlations in collider physics by Larkoski, Andrew J., Moult, Ian James

“…This procedure illuminates the source of nonglobal correlations and has connections more broadly to fundamental quantities in quantum field theory.…”
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Hydrodynamics with parametric slowing down and fluctuations near the critical point by Stephanov, M., Yin, Yi

“…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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An algebro-geometric study of two models of quantum computaiton by Lorgat, Raeez

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Machine Learning and Variational Algorithms for Lattice Field Theory by Kanwar, Gurtej

“…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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Search for the Higgs Boson in the ZZ --> ℓℓvv channel with CMS by Sung, Kevin Kai Hong

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Double Neutron Star Mergers: Are Late-time Radio Signals Overestimated? by Shao-Ze Li, Yun-Wei Yu, He Gao, Lin Lan

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Electronic structure and luminescent properties of Sr3Al2O6:Sm3+ orange phosphor prepared by hydrothermal method by Yong Yang, Heng Pan, Li Guan, Dawei Wang, Jinxin Zhao, Jingfa Yang, Zhiping Yang, Xu Li

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Renormalizing the vacuum energy in cosmological spacetime: implications for the cosmological constant problem by Cristian Moreno-Pulido, Joan Solà Peracaula

“…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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