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601
Cutting multiparticle correlators down to size
Published 2020“…Multiparticle correlators are mathematical objects frequently encountered in quantum field theory and collider physics. By translating multiparticle correlators into the language of graph theory, we can gain new insights into their structure as well as identify efficient ways to manipulate them. …”
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602
Scattering in Algebraic Approach to Quantum Theory—Associative Algebras
Published 2022-12-01“…The definitions of scattering matrix and inclusive scattering matrix in the framework of formulation of quantum field theory in terms of associative algebras with involution are presented. …”
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603
Unifying constructions of non-invertible symmetries
Published 2023-09-01“…In the past year several constructions of non-invertible symmetries in Quantum Field Theory in $d≥3$ have appeared. In this paper we provide a unified perspective on these constructions. …”
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604
Methods on compositeness and related aspects
Published 2022-01-01“…Here we elaborate on several methods for calculating the compositeness X of bound states and resonances in Quantum Mechanics, and in Quantum Field Theory by introducing particle number operators. …”
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605
Editorial for the Special Issue “Quantum Fields—From Fundamental Concepts to Phenomenological Questions”
Published 2020-12-01“…Quantum field theory and Einstein’s theory of general relativity are extremely successful in predicting the outcome of particle physics and gravitational experiments [...]…”
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Article -
606
The Inflationary Mechanism in Asymptotically Safe Gravity
Published 2019-08-01“…According to the asymptotic safety conjecture, gravity is a renormalizable quantum field theory whose continuum limit is defined by an interacting fixed point of the renormalization group flow. …”
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Article -
607
Semiclassical gravity beyond coherent states
Published 2024-01-01“…Abstract We show that it is possible to still use semiclassical gravity together with quantum field theory beyond the regimes where the field state is coherent. …”
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Article -
608
Dynamical response of quasi 1D Mott insulators
Published 2003“…At low energies certain one dimensional Mott insulators can be described in terms of an exactly solvable quantum field theory, the U(1) Thirring model. Using exact results derived from integrability we determine dynamical properties like the frequency dependent optical conductivity and the single-particle Green's function. …”
Journal article -
609
Arithmetic Chern-Simons Theory II
Published 2017“…We apply ideas of Dijkgraaf and Witten on three-dimensional topological quantum field theory to arithmetic curves, that is, the spectra of rings of integers in algebraic number fields. …”
Journal article -
610
Localisations of cobordism categories and invertible TFTs in dimension two
Published 2013“…Cobordism categories have played an important role in classical geometry and more recently in mathematical treatments of quantum field theory. Here we will compute localisations of two-dimensional discrete cobordism categories. …”
Journal article -
611
Cavity QED of superradiant phase transition in two dimensional materials
Published 2018“…In chapter 5, we are going to derive the OPQM from the quantum field theory, i.e., the quantum electrodynamics (QED) to be specific. …”
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Thesis -
612
Causal structure of the entanglement renormalization ansatz
Published 2013-01-01“…This result clarifies the nature of the ansatz, and suggests a generalization to quantum field theory. It also constitutes an independent justification of the connection between MERA and hyperbolic geometry which was proposed as a concrete implementation of the AdS-CFT correspondence.…”
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613
Bohrification of local nets
Published 2012-10-01“…We extend these ideas from quantum mechanics to algebraic quantum field theory: from a net of observables we construct a presheaf of quantum phase spaces. …”
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Article -
614
Elastic Kink-Meson scattering
Published 2024-04-01“…Abstract In classical field theory, radiation does not reflect off of reflectionless kinks. In quantum field theory, radiation quanta, called mesons, can be reflected. …”
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Article -
615
Collective phenomena
Published 2023-10-01“…Introduction/purpose: Quantum field theory techniques are able to describe precisely, inter alia, collective phenomena of statistical and solid state physics. …”
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616
Inverse problems, real-time dynamics and lattice simulations
Published 2022-01-01“…The determination of real-time dynamics of strongly coupled quantum fields is a central goal of modern nuclear and particle physics, which requires insight into quantum field theory beyond the weak-coupling approximation. …”
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617
Dark Energy Problem, Physics of Early Universe and Some New Approaches in Gravity
Published 2012-11-01“…It is shown that a quantum field theory of the Early Universe (Planck scales) and its limiting transition at low energy play a significant role. …”
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Article -
618
Compton scattering in TFD formalism
Published 2023-01-01“…It is a real-time finite temperature quantum field theory. Our result shows that thermal effects become relevant as the temperature increases. …”
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Article -
619
Theoretical aspects of supersymmetry
Published 2020“…In this thesis, we will go through some theoretical elements of Quantum Field Theory and the Standard Model, leading up to a discussion on Supersymmetry. …”
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Final Year Project (FYP) -
620
A proposal for testing subcritical vacuum pair production with high power lasers
Published 2010“…We present a proposal for testing the prediction of non-equilibrium quantum field theory below the Schwinger limit. The proposed experiments should be able to detect a measurable number of gamma rays resulting from the annihilation of pairs in the focal spot of two opposing high intensity laser beams. …”
Journal article