From the 1 of 5 linked papers with an AI index.
5 papers
Emergent quantum chaos from correlations on a random graph
Mrinal Sarkar, Valerio Pagni, Tilman Enss +1
The paper shows that a one‑dimensional lattice with sparse, long‑range random bonds can produce quantum‑chaotic spectral correlations and a localization transition, even without on…
False vacuum decay in long-range interacting quantum systems
Valerio Pagni, Laura Batini, Nicolò Defenu
We formulate false-vacuum decay in a mixed-field Ising chain with interactions as a spatially nonlocal Euclidean theory featuring a fractional spatial kinetic term…
Critical aging and relaxation dynamics in long-range systems
Valerio Pagni, Friederike Ihssen, Nicolò Defenu
We study the dynamical scaling of long-range models after a sudden quench to the critical temperature, using the functional renormalization group approach. We chara…
One-dimensional long-range Ising model: two (almost) equivalent approximations
Valerio Pagni, Guido Giachetti, Andrea Trombettoni +1
We investigate the critical behavior of the one-dimensional Ising model with long-range interactions using the functional renormalization group in the local potential approximation…
Nonperturbative treatment of a quenched Langevin field theory
Friederike Ihssen, Valerio Pagni, Jamir Marino +2
We present a novel approach within the functional renormalization group framework for computing critical exponents that characterize the time evolution of out-of-equilibrium many-b…