Published 1990
| Version v1
Book
U=∞ Hubbard model: Toward the exact solution in d=∞
Description
We investigate the U=∞ Hubbard model. Using a Grassmann-integral representation, we transform this model to a Grassmann field theory with two degrees of freedom per site and with a local quartic interaction. An external inhomogeneous field is introduced so that the linked-cluster expansion be applicable. All 1-loop contributions from this expansion are summed up and an exact expression for the inhomogeneous grandcanonical potential dependent on the auxiliary external field in d=∞ is found. (author). 4 refs
Additional details
Publishing Information
- Publisher
- World Scientific.
- Imprint Place
- Singapore (Singapore)
- ISBN
- 981-02-0066-8
- Imprint Title
- Strongly correlated electron systems
- Imprint Pagination
- 500 p.
- Journal Issue
- V. 23
- Series
- Progress in high temperature superconductivity.
- Journal Page Range
- p. 423-431.
Conference
- Title
- Anniversary adriatico research conference and workshop on strongly correlated electron systems.
- Dates
- 19 Jun - 21 Jul 1989.
- Place
- Trieste (Italy).
INIS
- Country of Publication
- Singapore
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 23085276
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ANALYTICAL SOLUTION; CLUSTER EXPANSION; ELECTRON CORRELATION; FERMIONS; HUBBARD MODEL; MANY-DIMENSIONAL CALCULATIONS; MEAN-FIELD THEORY; PARTITION FUNCTIONS; QUANTUM FIELD THEORY; STRONG-COUPLING MODEL
- Descriptors DEC
- CORRELATIONS; CRYSTAL MODELS; FIELD THEORIES; FUNCTIONS; MATHEMATICAL MODELS; PARTICLE MODELS