Results 1 to 10 of about 1,300 (102)

Inclusive scattering matrix and scattering of quasiparticles

open access: yesNuclear Physics B, 2020
The quantum theory can be formulated in the language of positive functionals on Weyl or Clifford algebra (L-functionals). It is shown that this language gives simple understanding of diagrams of Keldysh formalism (that coincide in our case with the ...
A. Schwarz
doaj   +3 more sources

Scattering in Algebraic Approach to Quantum Theory—Associative Algebras

open access: yesUniverse, 2022
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. The scattering matrix is expressed in terms of Green functions on
Albert Schwarz
doaj   +1 more source

Quantum Mechanics and Quantum Field Theory: Algebraic and Geometric Approaches

open access: yesUniverse, 2023
This is a non-standard exposition of the main notions of quantum mechanics and quantum field theory, including recent results. It is based on the algebraic approach in which the starting point is a star-algebra and on the geometric approach in which the ...
Igor Frolov, Albert Schwarz
doaj   +1 more source

Singularities of Scattering Matrices

open access: yesUniverse, 2023
Our main result is the analysis of singularities of the integrands of integrals representing the matrix elements of the scattering matrix and the inclusive scattering matrix in perturbation theory. These results are proven for any quantum field theory in
Albert Schwarz
doaj   +1 more source

Scattering in Geometric Approach to Quantum Theory

open access: yesUniverse, 2022
We define inclusive scattering matrix in the framework of a geometric approach to quantum field theory. We review the definitions of scattering theory in the algebraic approach and relate them to the definitions in the geometric approach.
Albert Schwarz
doaj   +1 more source

Measurement of double-parton scattering in inclusive production of four jets with low transverse momentum in proton-proton collisions at s $$ \sqrt{s} $$ = 13 TeV

open access: yesJournal of High Energy Physics, 2022
A measurement of inclusive four-jet production in proton-proton collisions at a center-of-mass energy of 13 TeV is presented. The transverse momenta of jets within |η| < 4.7 are required to exceed 35, 30, 25, and 20 GeV for the first-, second-, third ...
The CMS collaboration   +2347 more
doaj   +1 more source

Resonance scattering of elastic waves by an elastic inclusion in an elastic matrix. Numerical calculations [PDF]

open access: yesIEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 1988
The scattering of an incident plane ultrasonic (longitudinal) wave by an elastic spherical inhomogeneity contained within an elastic matrix is studied. The emphasis is on the computation and analysis of basic multiple cases that result when different material behaviours are present in the matrix and in the inclusion.
G C, Gaunaurd, W H, Wertman
openaire   +2 more sources

Soft photon radiation and entanglement

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
We study the entanglement between soft and hard particles produced in generic scattering processes in QED. The reduced density matrix for the hard particles, obtained via tracing over the entire spectrum of soft photons, is shown to have a large ...
Anastasios Irakleous   +2 more
doaj   +1 more source

Inclusive prompt photon-jet correlations as a probe of gluon saturation in electron-nucleus scattering at small x

open access: yesJournal of High Energy Physics, 2021
We compute the differential cross-section for inclusive prompt photon+quark production in deeply inelastic scattering of electrons off nuclei at small x (e + A DIS) in the framework of the Color Glass Condensate effective field theory.
Isobel Kolbe   +4 more
doaj   +1 more source

Transverse momentum dependent distributions in dijet and heavy hadron pair production at EIC

open access: yesJournal of High Energy Physics, 2022
We discuss the measurement of gluon transverse momentum distribution (TMD) in dijet and heavy hadron pair (HHP) production in semi-inclusive deep inelastic scattering.
Rafael F. del Castillo   +3 more
doaj   +1 more source

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