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We investigate the applicability of a random-matrix model to the description of non-collective excitations in heavy-ion reactions around the Coulomb barrier. To this end, we study fusion in the reaction $^{16}$O + $^{208}$Pb, taking account…

核理论 · 物理学 2015-06-17 S. Yusa , K. Hagino , N. Rowley

The probability of large deviations of the smallest Schmidt eigenvalue for random pure states of bipartite systems, denoted as $A$ and $B$, is computed analytically using a Coulomb gas method. It is shown that this probability, for large…

量子物理 · 物理学 2021-08-12 Udaysinh T. Bhosale

We illustrate the Jarzynski equality on the exactly solvable model of a one-dimensional ideal gas in uniform expansion or compression. The analytical results for the probability density $P(W)$ of the work $W$ performed by the gas are…

统计力学 · 物理学 2009-11-11 I. Bena , C. Van den Broeck , R. Kawai

Skew orthogonal polynomials arise in the calculation of the $n$-point distribution function for the eigenvalues of ensembles of random matrices with orthogonal or symplectic symmetry. In particular, the distribution functions are completely…

solv-int · 物理学 2015-06-26 M. Adler , P. J. Forrester , T. Nagao , P. van Moerbeke

We show that the zeros of random sequences of Gaussian systems of polynomials of increasing degree almost surely converge to the expected limit distribution under very general hypotheses. In particular, the normalized distribution of zeros…

复变函数 · 数学 2015-05-13 Bernard Shiffman

We study a new class of matrix models, formulated on a lattice. On each site are $N$ states with random energies governed by a Gaussian random matrix Hamiltonian. The states on different sites are coupled randomly. We calculate the density…

凝聚态物理 · 物理学 2009-10-22 E. Brézin , A. Zee

The remarkable universality of the eigenvalue correlation functions is perhaps one of the most salient findings in random matrix theory. Particularly for short-range separations of the eigenvalues, the correlation functions have been shown…

无序系统与神经网络 · 物理学 2025-08-28 Joseph W. Baron

One of the main concepts in quantum physics is a density matrix, which is a symmetric positive definite matrix of trace one. Finite probability distributions are a special case where the density matrix is restricted to be diagonal. Density…

量子物理 · 物理学 2014-08-14 Manfred K. Warmuth , Dima Kuzmin

This work identifies a solvable (in the sense that spectral correlation functions can be expressed in terms of orthogonal polynomials), rotationally invariant random matrix ensemble with a logarithmic weakly confining potential. The…

统计力学 · 物理学 2023-03-07 Wouter Buijsman

We present a density-matrix rate-equation approach to sequential tunneling through a metal particle weakly coupled to ferromagnetic leads. The density-matrix description is able to deal with correlations between degenerate many-electron…

介观与纳米尺度物理 · 物理学 2007-05-23 Stephan Braig , Piet W. Brouwer

The new Theorem on location of maximum of probability density functions of dimensionless second difference of the three adjacent energy levels for $N$-dimensional Gaussian orthogonal ensemble GOE($N$), $N$-dimensional Gaussian unitary…

统计力学 · 物理学 2007-05-23 Maciej M. Duras

For real symmetric and complex Hermitian Gaussian processes whose values are $d\times d$ matrices, we characterize the conditions under which the probability that at least $k$ eigenvalues collide is positive for $2\le k\le d$, and we obtain…

概率论 · 数学 2020-06-30 Jian Song , Yimin Xiao , Wangjun Yuan

Consider the free energy of a $d$-dimensional gas in canonical equilibrium under pairwise repulsive interaction and global confinement, in presence of a volume constraint. When the volume of the gas is forced away from its typical value,…

数学物理 · 物理学 2019-06-18 Fabio Deelan Cunden , Paolo Facchi , Marilena Ligabò , Pierpaolo Vivo

We introduce the bosonic and fermionic ensembles of density matrices and study their entanglement. In the fermionic case, we show that random bipartite fermionic density matrices have non-positive partial transposition, hence they are…

数学物理 · 物理学 2022-11-28 Stephane Dartois , Ion Nechita , Adrian Tanasa

We consider $n$ eigenvalues of complex and symplectic induced spherical ensembles, which can be realised as two-dimensional determinantal and Pfaffian Coulomb gases on the Riemann sphere under the insertion of point charges. For both cases,…

数学物理 · 物理学 2024-05-02 Sung-Soo Byun , Seongjae Park

We study asymptotic distribution of zeros of random holomorphic sections of high powers of positive line bundles defined over projective homogenous manifolds. We work with a wide class of distributions that includes real and complex…

复变函数 · 数学 2026-05-22 Turgay Bayraktar

Correlation functions involving products and ratios of half-integer powers of characteristic polynomials of random matrices from the Gaussian Orthogonal Ensemble (GOE) frequently arise in applications of Random Matrix Theory (RMT) to…

数学物理 · 物理学 2015-04-23 Yan V. Fyodorov , André Nock

We study Hamiltonians consisting of a deterministic term plus a random term. Using a daigrammatic approach and introducing the concept of "gluon connectedness," we calculate the density of energy levels for a wide class of probability…

凝聚态物理 · 物理学 2007-05-23 Anthony Zee

A theoretical description for the radial density profile of a finite number of identical charged particles confined in a harmonic trap is developed for application over a wide range of Coulomb coupling (or, equivalently, temperatures) and…

统计力学 · 物理学 2015-05-14 J. Wrighton , J. W. Dufty , H. Kählert , M. Bonitz

We point out that confusion sometimes arises when using a chemical potential in plasma with Coulomb interactions. The results of our consideration are applied to the discussion of nuclear reactions screening. Finally, we present a…

等离子体物理 · 物理学 2015-05-13 S. I. Glazyrin , S. I. Blinnikov