Results 41 to 50 of about 43,652 (301)
POSITIVITY OF QCD AT ASYMPTOTIC DENSITY [PDF]
Strong and Electroweak Matter 2002, 2003 In this talk, I try to show that the sign problem of dense QCD is due to modes whose frequency is higher than the chemical potential. An effective theory of quasi-quarks near the Fermi surface has a positive measure in the leading order. The higher-order corrections make the measure complex, but they are suppressed as long as the chemical potential is ...
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, 2019 We report on previously unnoticed features of the exact Hartree-exchange and correlation potentials for atoms and ions treated via ensemble density functional theory, demonstrated on fractional ions of Li, C, and F.
Leeor, Kronik +4 more
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Asymptotic Density and the Asymptotics of Partition Functions
Acta Mathematica Hungarica, 2000 17 pages.
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On asymptotic density inn-dimensions [PDF]
Pacific Journal of Mathematics, 1969 The notion of asymptotic density for sets of non-negative integers is generalized to sets of \(n\)-dimensional ``non-negative'' lattice points. Let \(S\) be the set of all \(n\)-tuples of non-negative integers. For \(A\subseteq S\), the Schnirelmann density, \(d(A)\), of \(A\), has been defined to be \(glb_F(A(F)/S(F))\) where \(X(Y)\) is the number of
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Contractions of Product Density Operators of Systems of Identical Fermions and Bosons
International Journal of Mathematics and Mathematical Sciences, 2010 Recurrence and explicit formulae for contractions (partial traces) of antisymmetric and symmetric products of identical trace class operators are derived. Contractions of product density operators of systems of identical fermions and bosons are proved to
Wiktor Radzki
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Machine-learning-based exchange correlation functional with physical asymptotic constraints
Physical Review Research, 2022 Density functional theory is the standard theory for computing the electronic structure of materials, which is based on a functional that maps the electron density to the energy.
Ryo Nagai, Ryosuke Akashi, Osamu Sugino
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FEBS Open Bio, EarlyView.Evolutionary analysis across 32 placental mammals identified positive selection at residues H148 and W149 in the immune receptor FcγR1. Ancestral reconstruction combined with molecular dynamics simulations reveals how these mutations may influence receptor structure and dynamics, providing insight into the evolution of antibody recognition and immune ...
David A. Young +7 more
wiley +1 more source
A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems
International Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam +2 more
wiley +1 more source
, 2021 It is proved that $P(ω)/\triangle_d$, where $\triangle_d$ is the ideal of sets of asymptotic density zero, is universal in the sense of embeddings.
Frankiewicz, Ryszard, Jureczko, Joanna
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Asymptotic density and the coarse computability bound [PDF]
Computability, 2016 For r ∈ [ 0 , 1 ] we say that a set A ⊆ ω is coarsely computable at density r if there is a computable set C such that { n : C ( n ) = A ( n ) } has lower density at least r. Let γ ( A ) = sup { r : A is coarsely computable at density r }. We study the interactions of these concepts with Turing reducibility. For example, we show that if r ∈ ( 0 , 1
Hirschfeldt, Dennis +3 more
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