Results 121 to 130 of about 36,165 (249)

Tadpole diagrams in constant electromagnetic fields

Journal of High Energy Physics, 2017
We show how all possible one-particle reducible tadpole diagrams in constant electromagnetic fields can be constructed from one-particle irreducible constant-field diagrams.
Felix Karbstein
doaj   +1 more source

Experimental targets for photon couplings of the QCD axion

Journal of High Energy Physics, 2018
The QCD axion’s coupling to photons is often assumed to lie in a narrow band as a function of the axion mass. We demonstrate that several simple mechanisms, in addition to the photophilic clockwork axion already in the literature, can significantly ...
Prateek Agrawal, JiJi Fan, Matthew Reece, Lian-Tao Wang   +3 more
doaj   +1 more source

Scalar-fermion analytic bootstrap in 4D

Journal of High Energy Physics, 2019
In this work we discuss an analytic bootstrap approach [1, 2] in the context of spinning 4D conformal blocks [3, 4]. As an example we study the simplest spinning case, the scalar-fermion correlator ϕ ψ ϕ ψ ¯ $$ \left\langle \phi\ \psi\ \phi\ \overline ...
Emtinan Elkhidir, Denis Karateev
doaj   +1 more source

Possible Evidence for Substantial Nonperturbative Quantum-Chromodynamic Effects [PDF]

, 1982
R. Michael Barnett
openalex   +1 more source

Nonperturbative effects in equilibrium finite-temperature scalar field theory [PDF]

, 1985
Hideaki Aoyama, Helen R. Quinn
openalex   +1 more source

Nonperturbative effects in the Standard Model with gauged 1-form symmetry [PDF]

, 2021
Mohamed M. Anber, Erich Poppitz
openalex   +1 more source

All-multiplicity amplitudes in impulsive PP-waves from the worldline formalism

Journal of High Energy Physics
We use the worldline formalism to derive Bern-Kosower type Master Formulae for the tree-level scattering of a charged particle and an arbitrary number of photons on impulsive PP-waves, where the coupling of the PP-wave to matter is treated fully non ...
Patrick Copinger, James P. Edwards, Anton Ilderton, Karthik Rajeev   +3 more
doaj   +1 more source

New nonperturbative scales and glueballs in confining supersymmetric gauge theories

Journal of High Energy Physics, 2018
We show that new nonperturbative scales exist in four-dimensional N $$ \mathcal{N} $$ = 1 super-Yang-Mills theory compactified on a circle, with an iterated-exponential dependence on the inverse gauge coupling.
Mohamed M. Anber, Erich Poppitz
doaj   +1 more source

Nonperturbative O(m−2) effects in B→Xγ from heavy quark effective theory [PDF]

, 1998
Junegone Chay
openalex   +1 more source

Complex eigenvalue instantons and the Fredholm determinant expansion in the Gross-Witten-Wadia model

Journal of High Energy Physics
We study the leading nonperturbative corrections to the strong-coupling (ungapped) phase of the Gross-Witten-Wadia (GWW) integral over unitary matrices, to one-loop order.
Dan Stefan Eniceicu, Raghu Mahajan, Chitraang Murdia   +2 more
doaj   +1 more source