Тип публикации: статья из журнала
Год издания: 2008
Идентификатор DOI: 10.1103/PhysRevE.78.015202
Ключевые слова: Chlorine compounds, Electron tunneling, Ferromagnetism, Ising model, Magnetic fields, Magnetism, Open systems, Quantum electronics, Quantum optics, Sedimentation, Effective Hamiltonian, Eigenvalues, First orders, Geometric phase, Geometric phases, Ground-state, Hermitian, One-dimensional, Open quantum systems, Quantum phase transition, Quantum phase transitions, Transverse-magnetic fields, Phase transitions
Аннотация: The relationship is established between quantum phase transitions and complex geometric phases for open quantum systems governed by a non-Hermitian effective Hamiltonian with accidental crossing of the eigenvalues. In particular, the geometric phase associated with the ground state of the one-dimensional dissipative Ising model in Показать полностьюa transverse magnetic field is evaluated, and it is demonstrated that the related quantum phase transition is of the first order.
Журнал: PHYSICAL REVIEW E
Выпуск журнала: Vol. 78, Is. 1, Part2
ISSN журнала: 24700045
Место издания: COLLEGE PK
Издатель: AMER PHYSICAL SOC