Results 121 to 130 of about 36,882 (207)
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
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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 +3 more
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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
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All-multiplicity amplitudes in impulsive PP-waves from the worldline formalism
Journal of High Energy PhysicsWe 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 +3 more
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Nonperturbative Zou-Wang-Mandel effect
Physical Review AThe Zou-Wang-Mandel (ZWM) effect is a remarkable consequence of photon indistinguishability and continuous-variable entanglement in which an optical phase shift is imprinted on photonic modes associated with optical paths that that do not pass through the phase shift source.
T. J. Volkoff, Diego A. R. Dalvit
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Complex eigenvalue instantons and the Fredholm determinant expansion in the Gross-Witten-Wadia model
Journal of High Energy PhysicsWe 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 +2 more
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What can be measured asymptotically?
Journal of High Energy PhysicsWe consider asymptotic observables in quantum field theories in which the S-matrix makes sense. We argue that in addition to scattering amplitudes, a whole compendium of inclusive observables exists where the time-ordering is relaxed.
Simon Caron-Huot +3 more
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Precocious scaling and nonperturbative effects in QCD
Zeitschrift für Physik C Particles and Fields, 1983 The onset of nonperturbative effects in QCD is studied in two ways: (1) by means of the nonvanishing vacuum expectation value of 〈g2F2〉 introduced by Shifman, Vainshtein and Zakharov; (2) using a finite energy sum rule (FESR) for the renormalization group function β.
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Nonperturbative effects in supergravity
, 2006 A promising candidate for a fundamental theory of nature, incorporating both general relativity and quantum mechanics, is string theory. This theory is based on one-dimensional extended objects that move through spacetime. However, string theory is most naturally formulated in ten dimensions.
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