نتایج جستجو برای: heisenberg group

تعداد نتایج: 987148  

مومن‌اف, حکمت, یوسفی, یوسف,

 In this paper, a system with spin S=3/2 with general isotropic nearest neighbor exchange within a mean field approximation possess is discnssed. We derive equations describing non-Heisenberg isotropic model using coherent states of SU(4) group in real parameters and then obtain dispersion equations of spin wave of dipole and quadrupole branches for a small linear excitation from the ground state.

Journal: :Comptes Rendus. Mathématique 2020

Journal: :The Quarterly Journal of Mathematics 2011

Journal: :Communications in Mathematical Physics 1993

Journal: :Journal of Physics A: Mathematical and General 1996

Journal: :Applied and Computational Harmonic Analysis 1995

2007
Annalisa Baldi

The Grushin plane is a right quotient of the Heisenberg group. Heisenberg geodesics’ projections are solutions of an isoperimetric problem in the Grushin plane.

2002
Gottfried Curio

The membrane instanton superpotential for M-theory on the G 2 holonomy manifold given by the cone on S 3 × S 3 is given by the dilogarithm and has Heisenberg monodromy group in the quantum moduli space. We compare this to a Heisenberg group action on the type IIA hypermultiplet moduli space for the universal hypermultiplet, to metric corrections from membrane instantons related to a twisted dil...

2009
NORBERT KAIBLINGER MARKUS NEUHAUSER

The Segal–Shale–Weil representation associates to a symplectic transformation of the Heisenberg group an intertwining operator, called metaplectic operator. We develop an explicit construction of metaplectic operators for the Heisenberg group H(G) of a finite abelian group G, an important setting in finite time-frequency analysis. Our approach also yields a simple construction for the multivari...

2006
DAVID S. TARTAKOFF

In an interesting note, E.M. Stein observed some 20 years ago that while the Kohn Laplacian b on functions is neither locally solvable nor (analytic) hypoelliptic, the addition of a non-zero complex constant reversed these conclusions at least on the Heisenberg group, and Kwon reproved and generalized this result using the method of concatenations. Recently Hanges and Cordaro have studied this ...

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