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Pramana

, Volume 42, Issue 4, pp 285–297 | Cite as

Non perturbative effective potentials of quantum oscillators

  • Rose P Ignatius
  • K Babu Joseph
Article
  • 24 Downloads

Abstract

Non perturbative analogues of the Gaussian effective potential (GEP) are defined for quantum oscillators obeyingq—or (q,p)—deformed commutation relations. These are called the non perturbativeq-effective potential (NP q EP) and the non perturbativeqp effective potential (NP qp EP), in the respective cases. A system-specific effective potential (SSEP) is also introduced by means of an additional minimization with respect to theq orq andp parameters. The method is applied toq and (q,p) oscillators of the quartic and sextic types. The SSEP in the case of ground states of theq-oscillators corresponds toq=1, which is the ordinary bosonic limit. A potential shape transition that involves the conversion of a double well to a single well or vice versa, is seen to exist in the case of quantum oscillators sitting in a double well potential.

Keywords

Quantum groups q-oscillator non-perturbative effective potential anharmonic oscillators 

PACS Nos

02.20 03.65 11.10 12.40 

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Copyright information

© the Indian Academy of Sciences 1994

Authors and Affiliations

  • Rose P Ignatius
    • 1
  • K Babu Joseph
    • 1
  1. 1.Department of PhysicsCochin University of Science and TechnologyKochiIndia

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