Fidelity susceptibility and geometric phase in critical phenomenon
نویسندگان
چکیده
منابع مشابه
Fidelity, dynamic structure factor, and susceptibility in critical phenomena.
Motivated by the growing importance of fidelity in quantum critical phenomena, we establish a general relation between the fidelity and structure factor of the driving term in a Hamiltonian through the concept of fidelity susceptibility. Our discovery, as shown by some examples, facilitates the evaluation of fidelity in terms of susceptibility using well-developed techniques, such as density ma...
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where H(F)σ ≡ −Tr{σF log σF} is the von Neumann entropy of a state σF on system F and we unambiguously let ρC ≡ TrAB{ρABC} denote the reduced density operator on system C, for example. The CQMI captures the correlations present between Alice and Bob from the perspective of Charlie in the independent and identically distributed (i.i.d.) resource limit, where an asymptotically large number of cop...
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Li Huang,1 Yilin Wang,2 Lei Wang,2,3 and Philipp Werner4 1Science and Technology on Surface Physics and Chemistry Laboratory, P.O. Box 9-35, Jiangyou 621908, China 2Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China 3Theoretische Physik, ETH Zurich, 8093 Zurich, Switzerland 4Department of Physics, University of ...
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ژورنال
عنوان ژورنال: Chinese Physics B
سال: 2011
ISSN: 1674-1056
DOI: 10.1088/1674-1056/20/4/040302