Results 81 to 90 of about 36,882 (207)

Nonperturbative effects in a scalar supersymmetric theory

Physics Letters B, 1983
Abstract We show that the Parisi-Sourlas argument of dimensionality reduction by two in certain supersymmetric theories holds nonperturbatively, and that topological instanton configurations are important in three dimensions.
openaire   +1 more source

Exact local distribution of the absolutely continuous spectral measure

Proceedings of the London Mathematical Society, Volume 132, Issue 4, April 2026.
Abstract It is well‐established that the spectral measure for one‐frequency Schrödinger operators with Diophantine frequencies exhibits optimal 1/2$1/2$‐Hölder continuity within the absolutely continuous spectrum (Avila and Jitomirskaya, Commun. Math. Phys. 301 (2011), 563–581).
Xianzhe Li, Jiangong You, Qi Zhou
wiley   +1 more source

Reconstructing S-matrix Phases with Machine Learning

Journal of High Energy Physics
An 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, Matthew D. Schwartz, Alexander Zhiboedov   +2 more
doaj   +1 more source

Nonperturbative effects and nonperturbative definitions in matrix models and topological strings

Journal of High Energy Physics, 2008
We develop techniques to compute multi-instanton corrections to the 1/N expansion in matrix models described by orthogonal polynomials. These techniques are based on finding trans-series solutions, i.e. formal solutions with exponentially small corrections, to the recursion relations characterizing the free energy.
openaire   +5 more sources

Nonperturbative Effects on the String World Sheet (Ii)

Nuclear Physics B, 1987
We show that the space-time superpotential, which is known to receive no string theoretic corrections in finite orders in α′, is modified by world-sheet instantons. This has a number of interesting consequences for the physics of compactification schemes which lead to low-energy supersymmetry.
M. Dine, N. Seiberg, X.-G. Wen, E. Witten   +3 more
openaire   +1 more source

How to define the moving frame of the Unruh-DeWitt detector on manifolds

Journal of High Energy Physics
The 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

Cosmological constant and Euclidean space from nonperturbative quantum torsion

, 2014
Heisenberg's nonperturbative quantization technique is applied to the nonpertrubative quantization of gravity. An infinite set of equations for all Green's functions is obtained. An approximation is considered where: (a) the metric remains as a classical
Heisenberg W., Ivanenko D. D., Vladimir Dzhunushaliev, Wilcox D. C.   +3 more
core   +1 more source

Merging van der Waals Materials and Optical Metasurfaces for Cavity Quantum Electrodynamics

Nanophotonics, Volume 15, Issue 5, 16 March 2026.
Flat optical metasurfaces supporting quasi‐bound states in the continuum (qBIC) enable cavity‐like, high‐Q resonances in ultrathin nanostructures. This perspective explores the emergence of cavity quantum electrodynamics in qBIC metasurfaces, specifically those made from ultrathin van der Waals nanostructures, where cavities and emitters are seamlessly
Luca Sortino, Andreas Tittl, Stefan A. Maier   +2 more
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
doaj   +1 more source

Instanton effects in quark form factor and quark-quark scattering at high energy

, 2004
The nonperturbative effects in the high-energy processes involving strongly interacting particles are studied within the instanton liquid model of the QCD vacuum (ILM) by using the Wilson integral framework.
't Hooft, A.E. Dorokhov, Andrei, Anikin, Balitsky, Balitsky, Barbieri, Bassetto, Baulieu, Belitsky, Belokurov, Beneke, Beneke, Bonciani, Bozzi, Brandt, Brandt, Callan, Catani, Cherednikov, Collins, Collins, Cornwall, Curci, D'Elia, Dahmen, Diakonov, Dokshitzer, Dorokhov, Dorokhov, Dorokhov, Dorokhov, Dorokhov, Dorokhov, Dorokhov, Dorokhov, Dorokhov, Dotsenko, Ermolaev, Ermolaev, Ermolaev, Fadin, Fishbane, Frenkel, Frenkel, Gatheral, Gellas, Hasenfratz, I.O. Cherednikov, Ivanov, Ivanov, Jackiw, Karanikas, Kharzeev, Kochelev, Korchemskaya, Korchemskaya, Korchemsky, Korchemsky, Korchemsky, Korchemsky, Korchemsky, Korchemsky, Kuraev, Landshoff, Low, Magnea, Magnea, Makeenko, Mastrolia, Meggiolaro, Mikhailov, Moch, Morris, Mueller, Mueller, Nachtmann, Nachtmann, Nowak, Nussinov, Parisi, Petronzio, Poggio, Polyakov, Qiu, Ringwald, Schrempp, Schrempp, Schäfer, Sen, Shifman, Shirkov, Shuryak, Shuryak, Simula, Stefanis, Sudakov, Zakharov   +97 more
core   +1 more source