نتایج جستجو برای: slater determinant

تعداد نتایج: 49507  

2006
Michael Creutz

Calculations using staggered quarks augmented with a root of the fermion determinant to reduce doubling give a qualitatively incorrect behavior in the small quark mass region. Attempts to circumvent this problem for the continuum limit involve an unproven combination of unphysical states, a loss of unitarity, and a rather peculiar non-commutation of limits.

2006
H. ZDUŃCZUK

We report on development of a new feature of the code HFODD, allowing for the angular-momentum projection of cranked symmetry-unrestricted Slater determinants. After a brief overview of the main theoretical building blocks and formalism, we present several preliminary applications. In particular, we discuss the case of a well-deformed rotational band in Gd, and we show the emergence of uncompen...

Journal: :Applied Mathematics and Computation 2012
Yaning Tang Junyi Tu Wen-Xiu Ma

Keywords: (3 + 1)-dimensional Jimbo–Miwa equation Hirota bilinear form Wronskian determinant solution a b s t r a c t In this paper, we obtain two kinds of sufficient conditions consisting of systems of linear partial differential equations, which guarantee that the corresponding Wroskian determinant solves the (3 + 1)-dimensional Jimbo–Miwa equation in the Hirota bilinear form. Our results sug...

1970
R. E. BORLAND K. DENNIS

The form of a real AT-body fermion wave function when expanded in Slater determinants of natural orbitals is investigated using a computer. I t is found that in the case when the number of natural orbitals is N f 2 there is a considerable reduction in the number of Slater determinants required. This offers the possibility of calculating atomic wave functions which are significantly more accurat...

2008
ALEXANDER BERKOVICH

Abstract. I revisit an automated proof of Andrews’ pentagonal number theorem found by Riese. I uncover a simple polynomial identity hidden behind his proof. I explain how to use this identity to prove Andrews’ result along with a variety of new formulas of similar type. I reveal an interesting relation between the tri-pentagonal theorem and items (19), (20), (94), (98) on the celebrated Slater ...

Journal: :IJMC 2007
June Lu Lu-Zhuang Wang Chun-Sheng Yu

This paper summarises the development of the Wireless Mobile Data Services (WMDS) in Zhejiang, a province typical of more economically developed southeast region of China. We surveyed 599 university students and business executives in Zhejiang in the fall of 2004 to examine whether Technology Acceptance Model (TAM) for WMDS are applicable in China, particularly in Zhejiang. The data were analys...

2009
Bipin Singh S. Uma Sankar

We study the Planck scale effects on Jarlskog determiant. Quantum gravitational (Planck scale) effects lead to an effective SU(2) × U(1) invariant dimension-5 Lagrangian involving neutrino and Higgs fields, which give rise to additional terms in neutrino mass matrix on electroweak symmetry breaking. We assume that gravitational interaction is flavor blind and compute the Jarlskog determiant due...

2005
YUNCHENG YOU

Abstract. A broad set of sufficient conditions consisting of systems of linear partial differential equations is presented which guarantees that the Wronskian determinant solves the Korteweg-de Vries equation in the bilinear form. A systematical analysis is made for solving the resultant linear systems of second-order and third-order partial differential equations, along with solution formulas ...

2006
Claude BARDOS François GOLSE Alex D. GOTTLIEB Norbert J. MAUSER

This article examines the time-dependent Hartree-Fock (TDHF) approximation of single-particle dynamics in systems of interacting fermions. We find the TDHF approximation to be accurate when there are sufficiently many particles and the initial manyparticle state is a Slater determinant, or any Gibbs equilibrium state for noninteracting fermions. Assuming a bounded two-particle interaction, we o...

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