On the Generation of Entanglement in Ytterbium Clock Atoms and a Novel Interpretation of the Madelung Fluid Theory of Quantum Mechanics by Mendez, Enrique

“…The Madelung Fluid theory is applied to a toy quantum field theory (QFT) for the first time. This generates a classical set of equations, that contain QFT dynamics. …”
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Dynamical systems of cosmological models for different possibilities of G and $$\rho _{\Lambda }$$ ρ Λ by Chingtham Sonia, S. Surendra Singh

“…We use the expression of $$\Lambda (H)$$ Λ ( H ) in the form of Taylor series with respect to H keeping only the even powers of H because of the general covariance of the effective action of quantum field theory in a curved background. Dynamical systems for three different cases based on the possibilities of gravitational constant G and the vacuum energy density $$\rho _{\Lambda }$$ ρ Λ have been analysed. …”
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QCD phase transitions using the QCD Dyson-Schwinger equation approach by GAO Fei, LIU Yuxin

“…The QCD DSE approach is a method based on the continuum quantum field theory. The new criteria were proposed based on the DSE and studied using the deconfinement and Chiral symmetry restoration phase transition of QCD. …”
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Three lessons in causality : what string theory has to say about naked singularities, time travel and horizon complementarity by Dyson, Lisa Marie, 1974-

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A Real Scalar Field Unifying the Early Inflation and the Late Accelerating Expansion of the Universe through a Quadratic Equation of State: The Vacuumon by Pierre-Henri Chavanis

“…This suggests that the vacuumon potential is just an effective classical potential that cannot be directly used to compute the fluctuations in the early universe. A fully quantum field theory may be required to achieve that goal. …”
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Computational complexity of certain quantum theories in 1+1 dimensions by Mehraban, Saeed

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Foliated-exotic duality in fractonic BF theories by Kantaro Ohmori, Shutaro Shimamura

“…There has been proposed two continuum descriptions of fracton systems: foliated quantum field theories (FQFTs) and exotic quantum field theories. …”
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From spin chains to real-time thermal field theory using tensor networks by Mari Carmen Bañuls, Michal P. Heller, Karl Jansen, Johannes Knaute, Viktor Svensson

“…In this article we examine tensor networks as a way of determining them in a fully ab initio way in a class of (1 + 1)-dimensional quantum field theories arising as infrared descriptions of quantum Ising chains. …”
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Periodic Solutions to Klein–Gordon Systems with Linear Couplings by Chen Jianyi, Zhang Zhitao, Chang Guijuan, Zhao Jing

“…In this paper, we study the nonlinear Klein–Gordon systems arising from relativistic physics and quantum field theories…”
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The propagator matrix reloaded by João F. Melo

“…The standard way to perform calculations for quantum field theories involves the S-matrix and the assumption that the theory is free at past and future infinity. …”
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Towards positive geometry of multi scalar field amplitudes. Accordiohedron and effective field theory by Mrunmay Jagadale, Alok Laddha

“…Abstract The geometric structure of S-matrix encapsulated by the “Amplituhedron program” has begun to reveal itself even in non-supersymmetric quantum field theories. Starting with the seminal work of Arkani-Hamed, Bai, He and Yan [1] it is now understood that for a wide class of scalar quantum field theories, tree-level amplitudes are canonical forms associated to polytopes known as accordiohedra. …”
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Continuous generalized symmetries in three dimensions by Jeremias Aguilera Damia, Riccardo Argurio, Luigi Tizzano

“…Abstract We present a class of three-dimensional quantum field theories whose ordinary global symmetries mix with higher-form symmetries to form a continuous 2-group. …”
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Loop corrections in Minkowski spacetime away from equilibrium. Part II. Finite-time results by Spasen Chaykov, Nishant Agarwal, Sina Bahrami, R. Holman

“…Abstract Loop corrections to finite-time correlation functions in quantum field theories away from equilibrium can be calculated using the in-in path integral approach. …”
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Modular categories as representations of the 3-dimensional bordism 2-category by Bartlett, B, Douglas, C, Schommer-Pries, C, Vicary, J

“…We show that once-extended anomalous 3-dimensional topological quantum field theories valued in the 2-category of k-linear categories are in canonical bijection with modular tensor categories equipped with a square root of the global dimension in each factor.…”

Erratum to: Cutkosky rules for superstring field theory by Roji Pius, Ashoke Sen

“…We consider the general class of quantum field theories with this property and prove Cutkosky rules for the amplitudes to all orders in perturbation theory. …”
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Multiscale Space-Time Ansatz for Correlation Functions of Quantum Systems Based on Quantics Tensor Trains by Hiroshi Shinaoka, Markus Wallerberger, Yuta Murakami, Kosuke Nogaki, Rihito Sakurai, Philipp Werner, Anna Kauch

“…The correlation functions of quantum systems—central objects in quantum field theories—are defined in high-dimensional space-time domains. …”
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Gauge Functions in Classical Mechanics: From Undriven to Driven Dynamical Systems by Zdzislaw E. Musielak, Lesley C. Vestal, Bao D. Tran, Timothy B. Watson

“…This is a novel phenomenon in dynamics that resembles the role of gauges in quantum field theories.…”
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The breakdown of resummed perturbation theory at high energies by Sebastian Schenk

“…Abstract Calculations of high-energy processes involving the production of a large number of particles in weakly-coupled quantum field theories have previously signaled the need for novel non-perturbative behavior or even new physical phenomena. …”
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Two-dimensional gauge anomalies and p -adic numbers by Camp, I, Gripaios, B, Le Nguyen Nguyen, K

“…We show how methods of number theory can be used to study anomalies in gauge quantum field theories in spacetime dimension two. To wit, the anomaly cancellation conditions for the abelian part of the local anomaly admit solutions if and only if they admit solutions in the reals and in the p-adics for every prime p and we use this to build an algorithm to find all solutions.…”

Anti-Newtonian Expansions and the Functional Renormalization Group by Max Niedermaier

“…Anti-Newtonian expansions are introduced for scalar quantum field theories and classical gravity. They expand around a limiting theory that evolves only in time while the spatial points are dynamically decoupled. …”
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