Results 111 to 120 of about 582,899 (222)
Energy from the nonperturbative QCD vacuum [PDF]
arXiv, 2005 Using the effective potential approach for composite operators, we have formulated a general method of calculation of the truly nonperturbative Yang-Mills vacuum energy density (the Bag constant apart from the sign, by definition). It is the main dynamical characteristic of the QCD ground state.
arxiv
Nonperturbative effects of Topological Theta-term
, 2011 We study the effects of a topological Theta-term on 2+1 dimensional principal chiral models (PCM), which are nonlinear sigma models defined on Lie group manifolds. We find that when Theta = pi, the nature of the disordered phase of the principal chiral model is strongly affected by the topological term: it is either a gapless conformal field theory, or
Xu, Cenke, Ludwig, Andreas W. W.
openaire +2 more sources
Journal of High Energy PhysicsThe phenomena of Squeezing and chaos have recently been studied in the context of inflation. We apply this formalism in the post-inflationary preheating phase.
Ayan Chakraborty, Debaprasad Maity
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 +3 more
doaj +1 more source
Nonperturbative Flow Equations at Finite Temperature [PDF]
arXiv, 1998 Nonperturbative Flow Equations within an effective constituent quark model for two quark flavors with Heat-Kernel methods are studied.
arxiv
Nonperturbative Violation of Factorial Moments Scaling in Dissipative QCD jets [PDF]
Phys.Atom.Nucl. 62 (1999) 701-707; Yad.Fiz. 62 (1999) 750-757, 1997 The nonperturbative modification of the evolution equation for QCD generating functional is applied to the analysis of the factorial moments of the intrajet particle distributions in QCD. Nonperturbative preasymptotic correction to the factorial moments scaling (F-scaling) is calculated.
arxiv
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
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Nonperturbative Effects in Energy Correlators: From Characterizing Confinement Transition to Improving $α_s$ Extraction [PDF]
Energy correlators provide a powerful observable to study fragmentation dynamics in QCD. We demonstrate that the leading nonperturbative corrections for projected $N$-point energy correlators are described by the same universal parameter for any $N$, which has already been determined from other event shape fits.
arxiv +1 more source
Nonperturbative effects in equilibrium finite-temperature scalar field theory [PDF]
, 1985 Hideaki Aoyama, Helen R. Quinn
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