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The extent to which information about fluctuations in hadron-nucleon total cross sections in the frozen approximation can be extracted from very high energy hadron-nucleus total cross section measurements for a range of heavy nuclei is…

核理论 · 物理学 2009-09-25 David R. Harrington

We study the comparative importance of thermal to non-thermal fluctuations for membrane-based models in the linear regime. Our results, both in 1+1 and 2+1 dimensions, suggest that non-thermal fluctuations dominate thermal ones only when…

统计力学 · 物理学 2011-09-28 Amit K. Chattopadhyay

The thermal properties of asymmetric nuclear matter are investigated in a relativistic mean- field approach. We start from free space NN-interactions and derive in-medium self-energies by Dirac-Brueckner theory. By the DDRH procedure we…

核理论 · 物理学 2015-03-11 Andreas Fedoseew , Horst Lenske

Dipole, triangular, and higher harmonic flow that have an origin in the initial density fluctuations has gained a lot of attention as they can provide additional important information about the dynamical properties (e.g. viscosity) of the…

核理论 · 物理学 2015-05-28 Sergei A. Voloshin

The spatial and temporal noise properties of diffuse radiation is investigated in the context of the cosmic microwave background (CMB), although generic formulae that enable application to any other forms of incoherent light of a prescribed…

宇宙学与河外天体物理 · 物理学 2009-06-02 Richard Lieu , Bizhu Jiang

The signature for a non-Fermi liquid behavior near a quantum phase transition has been observed in thermal and transport properties of many metallic systems at low temperatures. In the present work we consider specific examples of itinerant…

强关联电子 · 物理学 2009-10-30 Suresh G. Mishra , P. A. Sreeram

Finite size effects in the equilibrium phase space density distribution function are taken into account for alculations of the relaxation of collective motion in finite nuclei. Memory effects in the collision integral and the diffusivity…

核理论 · 物理学 2009-09-25 V. M. Kolomietz , S. V. Lukyanov , V. A. Plujko , S. Shlomo

We study the effects of thermal fluctuations on elastic rings. Analytical expressions are derived for correlation functions of Euler angles, mean square distance between points on the ring contour, radius of gyration, and probability…

软凝聚态物质 · 物理学 2009-10-31 Sergey Panyukov , Yitzhak Rabin

We compute the finite temperature density response function of nonrelativistic cold fermions with an isotropic condensate. The pair-breaking contribution to the response function is evaluated in the limit of small three-momentum transfers q…

核理论 · 物理学 2010-04-29 Armen Sedrakian , Jochen Keller

Using a Lorentz invariant deformed string/gauge duality model at finite temperature we calculate the thermal fluctuation and the corresponding linear response, verifying the fluctuation-dissipation theorem. The deformed AdS$_5$ is…

高能物理 - 理论 · 物理学 2020-10-07 Nathan G. Caldeira , Eduardo Folco Capossoli , Carlos A. D. Zarro , Henrique Boschi-Filho

Deformation, a key concept in our understanding of heavy nuclei, is based on a mean-field description that breaks the rotational invariance of the nuclear many-body Hamiltonian. We present a method to analyze nuclear deformations at finite…

核理论 · 物理学 2015-01-07 Y. Alhassid , C. N. Gilbreth , G. F. Bertsch

The static path approximation to the path integral representation of partition function provides a natural microscopic basis to deal with thermal fluctuations around mean field configurations. Using this approach for one-dimensional…

核理论 · 物理学 2009-10-22 B. K. Agrawal , A. Ansari

A systematic analysis of the moments of the fragment size distribution has been carried out for the multifragmentation (MF)of 1A GeV Au, La, and Kr on carbon. The breakup of Au and La is consistent with a continuous thermal phase…

核实验 · 物理学 2007-05-23 EOS Collaboration , B. K. Srivastava

We study nonlinear response of a ferrimagnetic sphere resonator (FSR) strongly coupled to a microwave loop gap resonator (LGR). The measured response in the regime of weak nonlinearity allows the extraction of the FSR Kerr coefficient and…

强关联电子 · 物理学 2021-08-25 Cijy Mathai , Oleg Shtempluck , Eyal Buks

The reaction mechanism of nucleus-nucleus collisions at projectile energies around the Fermi energy is investigated with emphasis on the production of fragmentation-like residues. The results of simulations are compared to experimental mass…

核理论 · 物理学 2008-11-26 M. Veselsky , G. A. Souliotis

We calculate the contribution of the fluctuations with the thermal origin to the inflationary nonGaussianity. We find that even a small component of radiation can lead to a large nonGaussianity. We show that this thermal nonGaussianity…

高能物理 - 理论 · 物理学 2009-12-15 Bin Chen , Yi Wang , Wei Xue

The instability of a Fermi-liquid drop with respect to bulk density distortions is considered. It is shown that the presence of the surface strongly reduces the growth rate of the bulk instability of the finite Fermi-liquid drop because of…

核理论 · 物理学 2009-10-31 V. M. Kolomietz , S. Shlomo

Irradiation of the strong light on the material leads to numerous non-linear effects that are essential to understand the physics of excited states of the system and for optoelectronics. Here, we study the non-linear thermoelectric effect…

介观与纳米尺度物理 · 物理学 2021-03-05 Pankaj Bhalla

We present a comprehensive analysis of hot and dilute isospin-asymmetric nuclear matter employing the temperature-dependent effective-relativistic mean-field theory (E-RMF). The E-RMF is applied to study the effect of $\delta$ and…

核理论 · 物理学 2023-03-15 Vishal Parmar , Manoj K Sharma , S K Patra

In the theory of the finite fermi-systems [1], it was shown that giant resonances in nuclei can be consider as the zero-sound excitations which exhaust the large part of the energy-weighted sum rules. In the framework of [1] the solutions…

核理论 · 物理学 2014-07-18 V. A. Sadovnikova