title: Fidelity susceptibility of the quantum Ising model in a transverse field: the exact solution.
abstract: We derive an exact closed-form expression for fidelity susceptibility of the quantum Ising model in the transverse field. We also establish an exact one-to-one correspondence between fidelity susceptibility in the ferromagnetic and paramagnetic phases of this model. Elegant summation formulas are obtained as a by-product of these studies.
authors.affiliation: Los Alamos National Laboratory, Theoretical Division, MS B213, Los Alamos, New Mexico 87545, USA.
authors.forename: Bogdan
authors.initials: B
authors.lastname: Damski
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D004574:Electromagnetic Fields; D008962:Models, Theoretical; D009716:Numerical Analysis, Computer-Assisted