Solitons in one-dimensional charge density wave systems

Thesis/Dissertation · Thu Jan 01 04:00:00 EST 1981

OSTI ID:6509053

Su, W P

Theoretical research on one dimensional charge density wave systems is outlined. A simple coupled electron-photon Hamiltonian is studied including a Green's function approach, molecular dynamics, and Monte Carlo path integral method. As in superconductivity, the nonperturbative nature of the system makes the physical ground states and low energy excitations drastically different from the bare electrons and phonons. Solitons carry quantum numbers which are entirely different from those of the bare electrons and holes. The fractional charge character of the solitons is an example of this fact. Solitons are conveniently generated by doping material with donors or acceptors or by photon absorption. Most predictions of the theory are in qualitative agreement with experiments. The one dimensional charge density wave system has potential technological importance and a possible role in uncovering phenomena which might have implications in relativistic field theory and elementary particle physics.

• OSTI ID: 6509053
• Country of Publication: United States
• Language: English

Related Subjects

645400* -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHARGE DENSITY
CRYSTAL DOPING
FIELD THEORIES
FUNCTIONS
GREEN FUNCTION
HAMILTONIANS
MATHEMATICAL OPERATORS
MONTE CARLO METHOD
ONE-DIMENSIONAL CALCULATIONS
QUANTUM NUMBERS
QUANTUM OPERATORS
QUASI PARTICLES
SOLITONS