VARIATIONAL STUDY FOR A COUPLED SYSTEM OF A QUANTUM TUNNELING STATE WITH PHONONS | Zendy

Shi Yun-Long | Zendy; Nie Yi-Hang | Zendy; Chen Hong | Zendy; Xiang Wu | Zendy

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VARIATIONAL STUDY FOR A COUPLED SYSTEM OF A QUANTUM TUNNELING STATE WITH PHONONS

Author(s) -

Shi Yun-Long,

Nie Yi-Hang,

Chen Hong,

Xiang Wu

Publication year - 1992

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.41.1499

Subject(s) - ground state , quantum tunnelling , physics , phonon , state (computer science) , transition of state , variational method , quantum phase transition , coupling (piping) , squeezed coherent state , quantum , quantum mechanics , condensed matter physics , coherent states , materials science , computer science , algorithm , metallurgy

The ground state energy of a coupled system of a quantum tunneling state with phonons is investegated by a variational approach. We find that the ground state of the system may be described by two variation states-displaced state and displaced-squeezed state, and the transition of the stable ground state from displaced state to displaced-squeezed state will occur as coupling strength increases. The phase diagram of the transition is also given.

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