Results 31 to 40 of about 1,012,728 (293)

Fixed point theorem combined with variational methods for a class of nonlinear impulsive fractional problems with derivative dependence

open access: yesAIMS Mathematics, 2021
In this article, we deal with a class of nonlinear impulsive problems of fractional-order in which nonlinearity is due to the fractional-order derivative term.
Adnan Khaliq, Mujeeb ur Rehman
doaj   +1 more source

Transport model study of conserved charge fluctuations and QCD phase transition in heavy-ion collisions

open access: yesHe jishu, 2023
The RHIC-STAR (Relativistic Heavy Ion Collider-Solenoid Tracker at RHIC) experiments have measured the cumulants of net-proton (a proxy for net-baryon), net-charge, and net-kaon (proxy of net-strangeness) multiplicity distributions in Au+Au collisions at
CHEN Qian, MA Guoliang, CHEN Jinhui
doaj   +1 more source

Field-theoretical analysis of singularities at critical end points [PDF]

open access: yesPhysica A: Statistical Mechanics and its Applications, 2000
Continuum models with critical end points are considered whose Hamiltonian ${\mathcal{H}}[ , ]$ depends on two densities $ $ and $ $. Field-theoretic methods are used to show the equivalence of the critical behavior on the critical line and at the critical end point and to give a systematic derivation of critical-end-point singularities like the ...
Diehl, Hans-Werner, Smock, Martin
openaire   +4 more sources

Dependence of the crossover zone on the regularization method in the two-flavor Nambu–Jona-Lasinio model

open access: yesOpen Physics, 2020
In this article, we study the two-flavor Nambu and Jona-Lasinio (NJL) phase diagrams on the T–μ plane through three regularization methods. In one of these, we introduce an infrared three-momentum cutoff in addition to the usual ultraviolet ...
Morones-Ibarra José Rubén   +3 more
doaj   +1 more source

The critical end point in QCD

open access: yesNuclear Physics A, 2007
Plenary talk at SEWM 06 by ...
Gavai, R. V., Gupta, Sourendu
openaire   +2 more sources

Thermal Critical Points and Quantum Critical End Point in the Frustrated Bilayer Heisenberg Antiferromagnet [PDF]

open access: yesPhysical Review Letters, 2018
We consider the finite-temperature phase diagram of the $S = 1/2$ frustrated Heisenberg bilayer. Although this two-dimensional system may show magnetic order only at zero temperature, we demonstrate the presence of a line of finite-temperature critical points related to the line of first-order transitions between the dimer-singlet and -triplet regimes.
Stapmanns, J.   +5 more
openaire   +5 more sources

New approach to lattice QCD at finite density; results for the critical end point on coarse lattices

open access: yesJournal of High Energy Physics, 2020
All approaches currently used to study finite baryon density lattice QCD suffer from uncontrolled systematic uncertainties in addition to the well-known sign problem. We formulate and test an algorithm, sign reweighting, that works directly at finite μ =
Matteo Giordano   +4 more
doaj   +1 more source

Comprehensive Evaluation of End-Point Free Energy Techniques in Carboxylated-Pillar[6]arene Host-Guest Binding: IV. The QM Treatment, GB Models and the Multi-Trajectory Extension

open access: yesLiquids, 2023
Due to the similarity of host–guest complexes and protein–ligand and protein–protein assemblies, computational tools for protein–drug complexes are commonly applied in host–guest binding.
Xiaohui Wang, Mao Wang, Zhaoxi Sun
doaj   +1 more source

Critical end point and universality class of neutron ^{3}P_{2} superfluids in neutron stars

open access: yesPhysical Review Research, 2020
We study the thermodynamics and critical behavior of neutron ^{3}P_{2} superfluids in the inner cores of neutron stars. ^{3}P_{2} superfluids offer a rich phase diagram including uniaxial/biaxial nematic phases, the ferromagnetic phase, and the cyclic ...
Takeshi Mizushima   +2 more
doaj   +1 more source

Ferroelectric Nematic-Isotropic Liquid Critical End Point

open access: yesPhysical Review Letters, 2023
A critical end point above which an isotropic phase continuously evolves into a polar (ferroelectric) nematic phase with an increasing electric field is found in a ferroelectric nematic liquid crystalline material. The critical end point is approximately 30 K above the zero-field transition temperature from the isotropic to nematic phase and at an ...
Jadwiga Szydlowska   +10 more
openaire   +4 more sources

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