Results 71 to 80 of about 1,733,435 (199)

Antimatter Gravity and the Results of the ALPHA‐g Experiment

Annalen der Physik, Volume 536, Issue 7, July 2024.
The recent results of the ALPHA‐g experiment, which show gravitational attraction between antihydrogen atoms and the Earth, seem to undermine the success of repulsive‐gravity models in the cosmological field. Analyzing the theory of CPT gravity, two solutions are found that are consistent with the experimental results, while preserving the large‐scale ...
Massimo Villata
wiley   +1 more source

Asymptotic freedom in the front-form Hamiltonian for quantum chromodynamics of gluons [PDF]

, 2015
Asymptotic freedom of gluons in QCD is obtained in the leading terms of their renormalized Hamiltonian in the Fock space, instead of considering virtual Green's functions or scattering amplitudes.
M. Gómez-Rocha, S. Glazek
semanticscholar   +1 more source

Cylindrically Symmetric Diffusion Model for Relativistic Heavy‐Ion Collisions

Annalen der Physik, Volume 536, Issue 5, May 2024.
To account for particle production in relativistic heavy‐ion collisions at the Large Hadron Collider, a relativistic diffusion model with cylindrical symmetry is derived from nonequilibrium–statistical considerations. It propagates an initial state based on quantum chromodynamics in time toward a thermal equilibrium limit.
Johannes Hoelck, Georg Wolschin
wiley   +1 more source

Magnetic moments of light nuclei from lattice quantum chromodynamics. [PDF]

Physical Review Letters, 2014
We present the results of lattice QCD calculations of the magnetic moments of the lightest nuclei, the deuteron, the triton, and ^{3}He, along with those of the neutron and proton. These calculations, performed at quark masses corresponding to m_{π}∼800  
S. Beane, E. Chang, Saul D. Cohen, W. Detmold, Huey-Wen Lin, K. Orginos, K. Orginos, A. Parreño, M. Savage, B. Tiburzi   +9 more
semanticscholar   +1 more source

Two Lectures on QCD at Short Distances: Jets and Factorization [PDF]

, 2014
This is a brief introduction to two of the central concepts in perturbative quantum chromodynamics, jets and factorization, which serve as windows into the short-distance behavior of quantum fields.
arxiv   +1 more source

Variational and Dyson--Schwinger Equations of Hamiltonian Quantum Chromodynamics [PDF]

Phys. Rev. D 97, 054027 (2018), 2018
The variational Hamiltonian approach to Quantum Chromodynamics in Coulomb gauge is investigated within the framework of the canonical recursive Dyson--Schwinger equations. The dressing of the quark propagator arising from the variationally determined non-perturbative kernels is expanded and renormalized at one-loop order, yielding a chiral condensate ...
arxiv   +1 more source

Deflated GMRES for Systems with Multiple Shifts and Multiple Right-Hand Sides [PDF]

, 2007
We consider solution of multiply shifted systems of nonsymmetric linear equations, possibly also with multiple right-hand sides. First, for a single right-hand side, the matrix is shifted by several multiples of the identity.
Baglama, Burrage, Chan, Chapman, Darnell, Datta, de Forcrand, De Sturler, Dean Darnell, Dong, Edwards, Erhel, Feriani, Freund, Freund, Freund, Frommer, Frommer, Gu, Kharchenko, Le Calvez, Morgan, Morgan, Morgan, Morgan, Morgan, Morgan, Morgan, Morgan, Morgan, Narayanan, Neff, Paige, Parks, Ronald B. Morgan, Saad, Saad, Saad, Simoncini, Simoncini, Simoncini, Sorensen, Stewart, Walter Wilcox, Wu, Young   +45 more
core   +3 more sources

Institute for Artificial Intelligence and Fundamental Interactions (IAIFI): Infusing physics intelligence into artificial intelligence

AI Magazine, Volume 45, Issue 1, Page 111-116, Spring 2024.
Abstract The NSF AI Institute for Artificial Intelligence and Fundamental Interactions (IAIFI, pronounced /aI‐faI/) is one of the inaugural NSF AI research institutes (https://iaifi.org). The IAIFI is enabling physics discoveries and advancing foundational AI through the development of novel AI approaches that incorporate first principles from ...
Jesse Thaler, Mike Williams, Marisa LaFleur   +2 more
wiley   +1 more source

Limits on Dark Photons, Scalars, and Axion‐Electromagnetodynamics with the ORGAN Experiment

Annalen der Physik, Volume 536, Issue 1, January 2024.
The nature of dark matter is one of the biggest mysteries in the Universe. ORGAN is an experiment which seeks to understand dark matter by figuring out what it is made of. In this article, the current sensitivity of ORGAN to various promising dark matter candidates is presented, and the future sensitivity is projected.
Ben T. McAllister, Aaron Quiskamp, Ciaran A. J. O'Hare, Paul Altin, Eugene N. Ivanov, Maxim Goryachev, Michael E. Tobar   +6 more
wiley   +1 more source

String Theory and Quantum Chromodynamics

, 2007
I review recent progress on the connection between string theory and quantum chromodynamics in the context of the gauge/gravity duality. Emphasis is placed on conciseness and conceptual aspects rather than on technical details. Topics covered include the
't Hooft G, Arnold P, Arnold P, Caron-Huot S, David Mateos, Heinz U W, Herzog C P, Herzog C P, Karsch F, Landsteiner K, Maldacena J M, Mas J, Mateos D, Mateos D Patino L, Meyer H B, Myers R C Starinets A O Thomson R M, Policastro G, Policastro G, Romatschke P Romatschke U, Saremi O, Son D T, Son D T, Witten E, Witten E   +23 more
core   +1 more source