Generators of Detailed Balance Quantum Markov Semigroups

Details Generators of Detailed Balance Quantum Markov Semigroups Generators of Detailed Balance Quantum Markov Semigroups

2007-07-14

arxiv.org/abs/0707.2147v2

Infin. Dimens. Anal. Quantum Probab. Relat. Top. 10 (3) 2007, 335-363

Physics

Mathematical Physics

31 pages

Scientific paper

10.1142/S0219025707002762

For a quantum Markov semigroup $\T$ on the algebra $\B$ with a faithful invariant state $\rho$, we can define an adjoint $\widetilde{\T}$ with respect to the scalar product determined by $\rho$. In this paper, we solve the open problems of characterising adjoints $\widetilde{\T}$ that are also a quantum Markov semigroup and satisfy the detailed balance condition in terms of the operators $H,L_k$ in the Gorini Kossakowski Sudarshan Lindblad representation $\Ll(x)=i[H,x] - {1/2}\sum_k(L^*_kL_k x-2L^*_kxL_k + xL^*_kL_k)$ of the generator of $\T$. We study the adjoint semigroup with respect to both scalar products $ = \tr(\rho a^* b)$ and $ = \tr(\rho^{1/2} a^* \rho^{1/2}b)$.

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