Results 51 to 60 of about 118,069 (232)

Generalized Beth–Uhlenbeck Entropy Formula From the Φ‐Derivable Approach

open access: yesContributions to Plasma Physics, EarlyView.
ABSTRACT We derive a generalized Beth–Uhlenbeck formula for the entropy of a dense fermion system with strong two‐particle correlations, including scattering states and bound states. We work within the Φ‐derivable approach to the thermodynamic potential.
David Blaschke, Gerd Röpke, Gordon Baym
wiley   +1 more source

Freeze-in Dirac neutrinogenesis: thermal leptonic CP asymmetry

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
We present a freeze-in realization of the Dirac neutrinogenesis in which the decaying particle that generates the lepton-number asymmetry is in thermal equilibrium.
Shao-Ping Li   +3 more
doaj   +1 more source

Quarkonium states in an anisotropic quark-gluon plasma [PDF]

open access: yes, 2009
In this work we study the properties of quarkonium states in a quark-gluon plasma which, due to expansion and non-zero viscosity, exhibits a local anisotropy in momentum space.
Guo, Yun
core  

Exercise limitations in amyloid cardiomyopathy assessed by cardiopulmonary exercise testing—A multicentre study

open access: yesESC Heart Failure, Volume 12, Issue 2, Page 1326-1335, April 2025.
Abstract Aims Amyloid cardiomyopathy is caused by the deposition of light chain (AL) or transthyretin amyloid (ATTR) fibrils, that leads to a restrictive cardiomyopathy, often resulting in heart failure (HF) with preserved or reduced ejection fraction.
Robin Willixhofer   +25 more
wiley   +1 more source

Jet tomography in high-energy nuclear collisions [PDF]

open access: yesEPJ Web of Conferences, 2019
When an energetic parton traversing the QCD medium, it may suffer multiple scatterings and lose energy. This jet quenching phenomenon may lead to the suppression of leading hadron productions as well as medium modifications of full jet observables in ...
Zhang Ben-Wei   +4 more
doaj   +1 more source

Reggeization of the quark-quark scattering amplitude in QCD [PDF]

open access: yesPhysical Review D, 1996
$s$-channel discontinuity of quark-quark scattering amplitude with gluon quantum numbers in the $t$ channel and negative signature is calculated in the Regge kinematical region in the two-loop approximation. Using this discontinuity and assuming that the Regge asymptotic behaviour is given by the Reggeized gluon contribution, we calculate the gluon ...
Fadin, V. S., Fiore, R., Quartarolo, A.
openaire   +3 more sources

The Quarks of Attention

open access: yesCoRR, 2022
Attention plays a fundamental role in both natural and artificial intelligence systems. In deep learning, attention-based neural architectures, such as transformer architectures, are widely used to tackle problems in natural language processing and beyond.
Pierre Baldi, Roman Vershynin
openaire   +2 more sources

Probing QCD critical fluctuations from intermittency analysis in relativistic heavy-ion collisions

open access: yesPhysics Letters B, 2020
It is shown that intermittency, a self-similar correlation with respect to the size of the phase space volume, is sensitive to critical density fluctuations of baryon numbers in a system belonging to the three-dimensional (3D) Ising universality class ...
Jin Wu   +3 more
doaj   +1 more source

Dynamical Quark Effects on Light Quark Masses [PDF]

open access: yesPhysical Review Letters, 2000
4 pages, revtex, 3 eps figures. Double statistics at beta=2.1, error estimates elaborated. Accepted for publication in Phys.
Khan, A A   +18 more
openaire   +10 more sources

Different demographic drivers of recovery in two adjacent populations of a long‐lived bird of prey

open access: yesOikos, EarlyView.
Understanding the demographic mechanisms underlying population decline or recovery is critical for conservation and management, yet similar population trends may arise from very different underlying processes. Comparing populations of vulnerable species groups like long‐lived raptors in different environments can reveal how species respond to change ...
Carina Nebel   +4 more
wiley   +1 more source

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