Studying a relativistic field theory at finite chemical potential with the density matrix renormalization group

Journal Article · Thu Jul 15 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.82.025003· OSTI ID:21410147

Weir, David J ^[1]

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1. Theoretical Physics, Blackett Laboratory, Imperial College London, SW7 2AZ London (United Kingdom)

The density matrix renormalization group is applied to a relativistic complex scalar field at finite chemical potential. The two-point function and various bulk quantities are studied. It is seen that bulk quantities do not change with the chemical potential until it is larger than the minimum excitation energy. The technical limitations of the density matrix renormalization group for treating bosons in relativistic field theories are discussed. Applications to other relativistic models and to nontopological solitons are also suggested.

• OSTI ID: 21410147
• Journal Information: Physical Review. D, Particles Fields, Vol. 82, Issue 2; Other Information: DOI: 10.1103/PhysRevD.82.025003; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
DENSITY MATRIX
EXCITATION
FIELD THEORIES
RELATIVISTIC RANGE
RENORMALIZATION
SCALAR FIELDS
SOLITONS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
MATRICES
QUASI PARTICLES