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Weak vs. strong breaking of integrability in interacting scalar quantum field theories
Published 2023-10-01“…We find that a naive extension of the scaling of crossover coupling with the volume observed in spin chains does not give satisfactory results for quantum field theory. Instead, we demonstrate that considering the scaling of the crossover coupling with the number of particles yields robust signatures, and is able to distinguish between the strengths of integrability breaking in the $\phi^4$ and $\phi^6$ quantum field theories.…”
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162
Hydrodynamic Quantum Field Theory: The Onset of Particle Motion and the Form of the Pilot Wave
Published 2021“…We consider the hydrodynamic quantum field theory proposed by Dagan and Bush, a model of quantum dynamics inspired by Louis de Broglie and informed by the hydrodynamic pilot-wave system discovered by Couder and Fort. …”
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163
PRESERVING UNITARITY IN A NOVEL PERTURBATIVE TECHNIQUE FOR SOLVING QUANTUM-FIELD THEORY
Published 1989Journal article -
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Preserving unitarity in a novel perturbative technique for solving quantum field theory
Published 1989Journal article -
165
Viscosity in strongly interacting quantum field theories from black hole physics.
Published 2005“…Using string theory methods, we show that this ratio is equal to a universal value of variant Planck's over 2pi/4pik(B) for a large class of strongly interacting quantum field theories whose dual description involves black holes in anti-de Sitter space. …”
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166
Holographic Projection of Electromagnetic Maxwell Theory
Published 2020-07-01Subjects: “…quantum field theory…”
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167
Superluminal Local Operations in Quantum Field Theory: A Ping-Pong Ball Test
Published 2023-10-01Subjects: “…quantum field theory…”
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168
Renormalization scheme dependence of $$\beta $$ β -functions in Lorentz-violating quantum field theory
Published 2022-08-01“…Abstract Effective quantum field theories that allow for the possibility of Lorentz symmetry violation can sometimes also include redundancies of description in their Lagrangians. …”
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169
Spin supplementary condition in quantum field theory: covariant SSC and physical state projection
Published 2023-07-01“…It is argued that the equivalent constraints in quantum field theory are the projection conditions on polarisation tensors, which remove timelike/longitudinal polarisations from the physical spectrum. …”
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170
Purely virtual extension of quantum field theory for gauge invariant fields: quantum gravity
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171
Achieving the quantum field theory limit in far-from-equilibrium quantum link models
Published 2022-12-01“…In light of the impressive ongoing efforts to achieve such realizations, a fundamental question regarding quantum link model regularizations of lattice gauge theories is how faithfully they capture the quantum field theory limit of gauge theories. Recent work \cite{zache2021achieving} has shown through analytic derivations, exact diagonalization, and infinite matrix product state calculations that the low-energy physics of $1+1$D $\mathrm{U}(1)$ quantum link models approaches the quantum field theory limit already at small link spin length $S$. …”
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172
Determining all thermodynamic transport coefficients for an interacting large N quantum field theory
Published 2023-01-01“…Abstract Thermodynamic transport coefficients can be calculated directly from quantum field theory without requiring analytic continuation to real time. …”
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173
Initial states in integrable quantum field theory quenches from an integral equation hierarchy
Published 2016-01-01“…We consider the problem of determining the initial state of integrable quantum field theory quenches in terms of the post-quench eigenstates. …”
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THE PRINCIPLE OF MINIMAL SENSITIVITY APPLIED TO A NEW PERTURBATIVE SCHEME IN QUANTUM-FIELD THEORY
Published 1989Journal article -
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One-loop calculations in quantum field theory: From Feynman diagrams to unitarity cuts
Published 2012Journal article -
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One-loop calculations in quantum field theory: From Feynman diagrams to unitarity cuts
Published 2012“…Recently, new approaches based on unitarity have been developed for calculating one-loop scattering amplitudes in quantum field theory. These methods are especially suitable for the description of multi-particle processes in QCD and are amenable to numerical implementations. …”
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178
Taking particle physics seriously: A critique of the algebraic approach to quantum field theory
Published 2011“…I argue against the currently prevalent view that algebraic quantum field theory (AQFT) is the correct framework for philosophy of quantum field theory and that "conventional" quantum field theory (CQFT), of the sort used in mainstream particle physics, is not suitable for foundational study. …”
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