Results 81 to 90 of about 36,165 (249)
Analytic structure in the coupling constant plane in perturbative QCD
, 2003 We investigate the analytic structure of the Borel-summed perturbative QCD amplitudes in the complex plane of the coupling constant. Using the method of inverse Mellin transform, we show that the prescription dependent Borel-Laplace integral can be cast,
A. Sokal +19 more
core +1 more source
Borel and Stokes Nonperturbative Phenomena in Topological String Theory and c=1 Matrix Models [PDF]
, 2009 We address the nonperturbative structure of topological strings and c=1 matrix models, focusing on understanding the nature of instanton effects alongside with exploring their relation to the large-order behavior of the 1/N expansion.
Pasquetti, Sara, Schiappa, Ricardo
core +2 more sources
A note on nonperturbative renormalization of effective field theory [PDF]
Journal of Physics A: Mathematical and Theoretical, 2009 6 pages, no figure, version to appear in J.Phys ...
openaire +3 more sources
1 PHz of Coherent Bandwidth from a Compact Fiber Device
Laser &Photonics Reviews, Volume 19, Issue 19, October 7, 2025.A coherent comb spectrum with an unprecedented bandwidth of 1 PHz, spanning from the deep ultraviolet (280 nm) to the mid‐infrared (2700 nm), is generated by a compact fiber device. The integrated, novel pulse purification technology enables broadband dispersion control and the synthesis of low‐noise, single‐cycle near‐infrared pulses with a clean ...
Sarah R. Hutter +4 more
wiley +1 more source
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
doaj +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 +5 more sources
Holomorphic field theories and higher algebra
Bulletin of the London Mathematical Society, Volume 57, Issue 10, Page 2903-2974, October 2025.Abstract Aimed at complex geometers and representation theorists, this survey explores higher dimensional analogs of the rich interplay between Riemann surfaces, Virasoro and Kac‐Moody Lie algebras, and conformal blocks. We introduce a panoply of examples from physics — field theories that are holomorphic in nature, such as holomorphic Chern‐Simons ...
Owen Gwilliam, Brian R. Williams
wiley +1 more source
How to define the moving frame of the Unruh-DeWitt detector on manifolds
Journal of High Energy PhysicsThe physical phenomena seen by an observer are defined for a local inertial system that is subjective to the observer. Such a coordinate system is called a “moving frame” because it changes from time to time.
Tomohiro Matsuda
doaj +1 more source
Numerical study of multiparticle scattering in λϕ 4 theory
Journal of High Energy Physics, 2018 We study numerically classical collisions of waves in λϕ 4 theory. These processes correspond to multiparticle scattering in the semiclassical regime.
S. V. Demidov, B. R. Farkhtdinov
doaj +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
doaj +1 more source