Results 81 to 90 of about 582,899 (222)
Iterated Perturbation Theory for Mott Insulators in a Static Electric Field with Optical Phonons
physica status solidi (b), Volume 261, Issue 9, September 2024.Schematic representation of the current flowing within the lattice. When the field is applied, electrons can tunnel through the former gap of an adjacent site, creating the necessary states to populate the conduction band of a site which is twice lattice spacings apart.
Tommaso Maria Mazzocchi, Enrico Arrigoni
wiley +1 more source
|Vub| determination and testing of lepton flavour universality in semileptonic Bc → D(∗) decays
Journal of High Energy Physics, 2020 In light of prospects for measurements of B c → D (∗) lv decays in the upcoming Upgrade II of the LHC, we show that by using calculated B c → D (∗) form factors a competitive extraction of the |V ub | CKM matrix element from the B c → Dμ v ¯ μ $$ {B}_c\
Domagoj Leljak, Blaženka Melić
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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
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Nonperturbative contribution to the Dokshitzer-Gribov-Lipatov-Altarelli-Parisi and Gribov-Levin-Ryskin equation [PDF]
arXiv, 1999 By studying the nonperturbative contribution to the Dokshitzer-Gribov-Lipatov-Altarelli-Parisi and Gribov-Levin-Ryskin equation, it is found that (i) the nonperturbative contribution suppresses the evolution rate at the low $Q^2$, small-x region; (ii) the nonperturbative contribution weakens the shadowing effect.
arxiv
Emergent Gauge Fields and Their Nonperturbative Effects in Correlated Electrons [PDF]
Modern Physics Letters B, 2015 The history of modern condensed matter physics may be regarded as the competition and reconciliation between Stoner’s and Anderson’s physical pictures, where the former is based on momentum–space descriptions focusing on long wave-length fluctuations while the latter is based on real-space physics emphasizing emergent localized excitations.
Kim, KS, Akihiro Tanaka
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WIREs Computational Molecular Science, Volume 14, Issue 5, September/October 2024.Controling molecular processes using light. Abstract Molecular‐level understanding of photoinduced processes is critically important for breakthroughs in transformative technologies utilizing light, ranging from photomedicine to photoresponsive materials. Theory and simulation play a crucial role in this task.
Shirin Faraji +2 more
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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
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Nonperturbative versus perturbative effects in generalized parton distributions [PDF]
Physical Review D, 2005 Generalized parton distributions (GPDs) are studied at the hadronic (nonperturbative) scale within different assumptions based on a relativistic constituent quark model. In particular, by means of a meson-cloud model we investigate the role of nonperturbative antiquark degrees of freedom and the valence quark contribution.
B. Pasquini +2 more
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Advanced Optical Materials, Volume 12, Issue 22, August 5, 2024.An efficient current injection by linearly polarized light with two photon energies, where one is the second harmonic of the other, is observed in a highly nonlinear regime. The current injection originates from the population imbalance of photo‐excited carriers in the Brillouin zone due to the breaking of time‐reversal symmetry by the combination of ...
Wenwen Mao +2 more
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Reconstructing S-matrix Phases with Machine Learning
Journal of High Energy PhysicsAn important element of the S-matrix bootstrap program is the relationship between the modulus of an S-matrix element and its phase. Unitarity relates them by an integral equation.
Aurélien Dersy +2 more
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