67 citations · 107 across the 5 of their papers we have counts for
3 papers · 1 filter
Emptiness formation probability and Painlevé V equation in the XY spin chain
Filiberto Ares, Jacopo Viti
We reconsider the problem of finding consecutive down spins in the ground state of the XY chain, a quantity known as the Emptiness Formation Probability. Motivated by new devel…
Entanglement Dynamics after a Quench in Ising Field Theory: A Branch Point Twist Field Approach
Olalla A. Castro-Alvaredo, Máté Lencsés, István M. Szécsényi +1
We extend the branch point twist field approach for the calculation of entanglement entropies to time-dependent problems in 1+1-dimensional massive quantum field theories. We focus…
Return amplitude after a quantum quench in the XY chain
Khadijeh Najafi, M. A. Rajabpour, Jacopo Viti
We determine an exact formula for the transition amplitude between any two arbitrary eigenstates of the local -magnetization operators in the quantum XY chain. We further use th…