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1001
On the Generation of Entanglement in Ytterbium Clock Atoms and a Novel Interpretation of the Madelung Fluid Theory of Quantum Mechanics
Published 2024“…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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Thesis -
1002
Dynamical systems of cosmological models for different possibilities of G and $$\rho _{\Lambda }$$ ρ Λ
Published 2022-10-01“…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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1003
QCD phase transitions using the QCD Dyson-Schwinger equation approach
Published 2023-04-01“…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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1004
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1005
A Real Scalar Field Unifying the Early Inflation and the Late Accelerating Expansion of the Universe through a Quadratic Equation of State: The Vacuumon
Published 2022-01-01“…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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1006
Computational complexity of certain quantum theories in 1+1 dimensions
Published 2016Get full text
Thesis -
1007
Foliated-exotic duality in fractonic BF theories
Published 2023-06-01“…There has been proposed two continuum descriptions of fracton systems: foliated quantum field theories (FQFTs) and exotic quantum field theories. …”
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1008
From spin chains to real-time thermal field theory using tensor networks
Published 2020-08-01“…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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1009
Periodic Solutions to Klein–Gordon Systems with Linear Couplings
Published 2021-08-01“…In this paper, we study the nonlinear Klein–Gordon systems arising from relativistic physics and quantum field theories…”
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Article -
1010
The propagator matrix reloaded
Published 2023-03-01“…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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1011
Towards positive geometry of multi scalar field amplitudes. Accordiohedron and effective field theory
Published 2022-04-01“…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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1012
Continuous generalized symmetries in three dimensions
Published 2023-05-01“…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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1013
Loop corrections in Minkowski spacetime away from equilibrium. Part II. Finite-time results
Published 2023-02-01“…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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1014
Modular categories as representations of the 3-dimensional bordism 2-category
Published 2015“…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.…”
Journal article -
1015
Erratum to: Cutkosky rules for superstring field theory
Published 2018-09-01“…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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1016
Multiscale Space-Time Ansatz for Correlation Functions of Quantum Systems Based on Quantics Tensor Trains
Published 2023-04-01“…The correlation functions of quantum systems—central objects in quantum field theories—are defined in high-dimensional space-time domains. …”
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1017
Gauge Functions in Classical Mechanics: From Undriven to Driven Dynamical Systems
Published 2020-09-01“…This is a novel phenomenon in dynamics that resembles the role of gauges in quantum field theories.…”
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1018
The breakdown of resummed perturbation theory at high energies
Published 2022-03-01“…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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1019
Two-dimensional gauge anomalies and p -adic numbers
Published 2024“…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.…”
Journal article -
1020
Anti-Newtonian Expansions and the Functional Renormalization Group
Published 2019-03-01“…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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Article