Results 121 to 130 of about 11,120,519 (277)
Effective gravitational couplings of Kaluza-Klein gauge theories
Journal of High Energy Physics, 2023 We study the effective gravitational couplings of four-dimensional gauge theories with eight supercharges. The class of theories we analyse are arrived at via Kaluza-Klein compactification of five-dimensional gauge theories.
Sujay K. Ashok +4 more
doaj +1 more source
Nonperturbative effects in QCD at finite temperature and density [PDF]
Physics of Particles and Nuclei, 1999 These lecture notes illustrate the application of Dyson-Schwinger equations in QCD. The extensive body of work at zero temperature and chemical potential is represented by a selection of contemporary studies that focus on solving the Bethe-Salpeter equation, deriving an exact mass formula in QCD that describes light and heavy pseudoscalar mesons ...
openaire +4 more sources
Visible GeV ALP from TeV Vector‐Like Leptons
Fortschritte der Physik, Volume 73, Issue 3, March 2025.Abstract A model is presented where a GeV axion‐like‐particle (ALP) is predicted in a large portion of the parameter space due to the presence of explicit Peccei–Quinn (PQ) symmetry‐breaking terms in an exotic leptonic sector. The latter provides a solution to the muon g−2$g-2$ anomaly, within the framework of the Linear Seesaw neutrino mechanism.
Arturo de Giorgi +2 more
wiley +1 more source
Off-shell structure of the string sigma model
, 1999 The off-shell structure of the string sigma model is investigated. In the open bosonic string, nonperturbative effects are shown to depend crucially on the regularization scheme.
Kostelecky, Alan +2 more
core +1 more source
The S-matrix bootstrap with neural optimizers. Part I. Zero double discontinuity
Journal of High Energy PhysicsIn this work, we develop machine learning techniques to study nonperturbative scattering amplitudes. We focus on the two-to-two scattering amplitude of identical scalar particles and study a toy model where we set the double discontinuity to zero ...
Mehmet Asım Gümüş +3 more
doaj +1 more source
Non-perturbative effects in μ → eγ
Journal of High Energy Physics, 2019 We compute the non-perturbative contribution of semileptonic tensor operators q ¯ σ μ ν q ℓ ¯ σ μ ν ℓ $$ \left(\overline{q}{\sigma}^{\mu \nu }q\right)\left(\overline{\ell}{\sigma}_{\mu \nu}\ell \right) $$ to the purely leptonic process μ → eγ and to the ...
Wouter Dekens +3 more
doaj +1 more source
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
openaire +2 more sources
Study of Semileptonic B⟶DPℓ+νℓ Decays Based on the SU(3) Flavor Symmetry
Advances in High Energy Physics, Volume 2025, Issue 1, 2025.Decays B⟶DPℓ+νℓ(ℓ = e, μ, τ) with the nonresonance, the charmed vector resonances, the charmed scalar resonances, and the charmed tensor resonances are explored by using the SU(3) flavor symmetry approach. Firstly, the decay amplitudes of different modes are related by the SU(3) flavor symmetry.
Ru-Min Wang +5 more
wiley +1 more source
Semiholography for heavy ion collisions
, 2016 The formation of QGP in heavy ion collisions gives us a great opportunity for learning about nonperturbative dynamics of QCD. Semiholography provides a new consistent framework to combine perturbative and non-perturbative effects in a coherent way and ...
Mukhopadhyay, Ayan, Preis, Florian
core +2 more sources
Heavy Quarkonium States With Baryonic Chemical Potential
Advances in High Energy Physics, Volume 2025, Issue 1, 2025.In this work, we have studied the dissociation behavior of 1S and 2S states of quarkonium using quasiparticle approach where the Debye mass depends on baryonic chemical potential. The binding energies of the quarkonium states has been obtained by using quasiparticle Debye mass which further depends on temperature and baryonic chemical potential (μb ...
Siddhartha Solanki +3 more
wiley +1 more source