Results 61 to 70 of about 582,899 (222)
Nonperturbative corrections to the Drell-Yan transverse momentum distribution [PDF]
JHEP 0105:004,2001, 2001 We study nonperturbative corrections to the transverse momentum distribution of vector bosons in the Drell-Yan process. Factorizing out the Sudakov effects due to soft gluons we express their contribution to the distribution in the form of the vacuum averaged Wilson loop operator. We calculate the nonperturbative contribution to the Sudakov form factor
arxiv +1 more source
Theory and modeling of nonperturbative effects in thermoviscous acoustofluidics
Physical Review E, 2023 A theoretical model of thermal boundary layers and acoustic heating in microscale acoustofluidic devices is presented. Based on it, an iterative numerical model is developed that enables numerical simulation of nonlinear thermoviscous effects due to acoustic heating and thermal advection.
Jonas Helboe Joergensen, Henrik Bruus
openaire +3 more sources
Nonperturbative effects in heavy quarkonia
, 1994 An effective hamiltonian for heavy quarkonia is derived from QCD by separating gluonic fields in background and quantum fields and neglecting anharmonic contributions. Mesonic states with nonperturbative gluonic components are constructed. These states are invariant under gauge changes of the background fields and form an orthogonal basis.
Nunes, C. A. A. +3 more
openaire +2 more sources
Nonperturbative effects in noncritical strings with soliton backgrounds [PDF]
Physics Letters B, 1997 15 pages + 1 eps figure, LaTeX, Minor ...
Masafumi Fukuma, Shigeaki Yahikozawa
openaire +4 more sources
physica status solidi (b), EarlyView.It is demonstrated that the relaxation time approximation (RTA) for the quantum kinetic equation, a simple method for describing nonequilibrium steady states, has a critical flaw in the longitudinal nonlinear DC conductivity of insulators under weak electric fields.
Ibuki Terada +3 more
wiley +1 more source
Advances and Prospects in Understanding London Dispersion Interactions in Molecular Chemistry
Angewandte Chemie, Volume 136, Issue 12, March 18, 2024.It has by now been realized that London dispersion (LD) interactions, the main contributor to the attractive part of the van der Waals potential, are ubiquitously present and need to be taken into consideration in structures and dynamics of chemical reactions.
Lars Rummel, Peter R. Schreiner
wiley +2 more sources
Nonperturbative Effect in c=1 Noncritical String Theory and Penner Model [PDF]
Nucl.Phys.B740:222-242,2006, 2005 We derive the effect of instantons in the Penner model. It is known that the free energies of the Penner model and the c=1 noncritical string at self-dual radius agree in a suitable double scaling limit. On the other hand, the instanton in the matrix model describes a nonperturbative effect in the noncritical string theory.
arxiv +1 more source
Celestial Topology, Symmetry Theories, and Evidence for a NonSUSY D3‐Brane CFT
Fortschritte der Physik, Volume 73, Issue 4, April 2025.Abstract Symmetry Theories (SymThs) provide a flexible framework for analyzing the global categorical symmetries of a D$D$‐dimensional QFTD$\text{QFT}_{D}$ in terms of a (D+1)$(D+1)$‐dimensional bulk system SymThD+1$\text{SymTh}_{D+1}$. In QFTs realized via local string backgrounds, these SymThs naturally arise from dimensional reduction of the linking
Jonathan J. Heckman, Max Hübner
wiley +1 more source
Universality of nonperturbative QCD effects in radiative B-decays [PDF]
Physics Letters B, 2003 We demonstrate, by an explicit one-loop calculation, that at leading twist the nonperturbative effects in B -> gamma l nu, B -> gamma gamma and B -> gamma l+ l- radiative decays are contained in a common multiplicative factor ( _B(E_ ), where E_ is the energy of the photon). We argue that this result holds also at higher orders.
Christopher T. Sachrajda +2 more
openaire +6 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