Results 11 to 20 of about 885,594 (333)

Relative quantum field theory [PDF]

open access: greenCommunications in Mathematical Physics, 2012
We highlight the general notion of a relative quantum field theory, which occurs in several contexts. One is in gauge theory based on a compact Lie algebra, rather than a compact Lie group. This is relevant to the maximal superconformal theory in six dimensions.
Daniel S. Freed, Constantin Teleman
core   +7 more sources

Quantum field theory [PDF]

open access: yesReviews of Modern Physics, 1999
I discuss the general principles underlying quantum field theory, and attempt to identify its most profound consequences. The deepest of these consequences result from the infinite number of degrees of freedom invoked to implement locality. I mention a few of its most striking successes, both achieved and prospective.
Wilczek, Frank
openaire   +3 more sources

Braided Quantum Field Theory [PDF]

open access: yesCommunications in Mathematical Physics, 2001
We develop a general framework for quantum field theory on noncommutative spaces, i.e., spaces with quantum group symmetry. We use the path integral approach to obtain expressions for $n$-point functions. Perturbation theory leads us to generalised Feynman diagrams which are braided, i.e., they have non-trivial over- and under-crossings. We demonstrate
Oeckl, Robert
openaire   +5 more sources

FROM EUCLIDEAN FIELD THEORY TO QUANTUM FIELD THEORY [PDF]

open access: yesReviews in Mathematical Physics, 1999
In order to construct examples for interacting quantum field theory models, the methods of Euclidean field theory turned out to be powerful tools since they make use of the techniques of classical statistical mechanics. Starting from an appropriate set of Euclidean n-point functions (Schwinger distributions), a Wightman theory can be reconstructed by
Dirk Schlingemann, Universität Hamburg
openaire   +5 more sources

Quantum Field Theory

open access: yesUniverse, 2023
This Special Issue on quantum field theory presents work covering a wide and topical range of subjects mainly within the area of interacting 4D quantum field theories subject to certain backgrounds [...]
Ralf Hofmann
doaj   +3 more sources

Constructive Quantum Field Theory

open access: yes, 2006
A review of the renormalization group approach to the proof of non perturbative ultraviolet stability in scalar field theories in dimension d=2,3.
Aizenman   +25 more
openaire   +4 more sources

Towards Quantum Field Theory in Categorical Quantum Mechanics [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2018
In this work, we use tools from non-standard analysis to introduce infinite-dimensional quantum systems and quantum fields within the framework of Categorical Quantum Mechanics.
Stefano Gogioso, Fabrizio Genovese
doaj   +3 more sources

Light neutralino dark matter in U(1)XSSM

open access: yesNuclear Physics B, 2021
The U(1)X extension of the minimal supersymmetric standard model (MSSM) is called as U(1)XSSM with the local gauge group SU(3)C×SU(2)L×U(1)Y×U(1)X. U(1)XSSM has three singlet Higgs superfields beyond MSSM.
Shu-Min Zhao   +5 more
doaj   +1 more source

Linear Superposition as a Core Theorem of Quantum Empiricism

open access: yesUniverse, 2022
Clarifying the nature of the quantum state |Ψ⟩ is at the root of the problems with insight into counter-intuitive quantum postulates. We provide a direct—and math-axiom free—empirical derivation of this object as an element of a vector space ...
Yurii V. Brezhnev
doaj   +1 more source

Incorporating element doping and quantum dot embedding effects to enhance the thermoelectric properties of higher manganese silicides

open access: yesJournal of Materiomics, 2021
Element doping and nano-inclusion embedding are effective approaches to enhance the electrical conductivities and decrease the lattice thermal conductivities of thermoelectric (TE) materials, respectively.
Qing Wang   +9 more
doaj   +1 more source

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