76 citations · 176 across the 16 of their papers we have counts for
16 papers
Interface evolution in the two-dimensional quantum Ising model
Georgios Kampanis, Marianna Sorba, Gesualdo Delfino
We consider the unitary time evolution of an interface in the regime of spontaneously broken symmetry of the two-dimensional quantum Ising model. The interface is induced by an ini…
Criticality in the disordered -color Ashkin-Teller model
Youssef Makoudi, Gesualdo Delfino
The -color Ashkin-Teller model corresponds to Ising models coupled by four-spin interactions. We consider the two-dimensional case in presence of quenched disorder and use s…
On the nature of the spin glass transition
Gesualdo Delfino
We recently showed that the two-dimensional Ising spin glass allows for a line of renormalization group fixed points which explains properties observed in numerical studies. We obs…
Quantum quenches with long range interactions
Marianna Sorba, Nicolò Defenu, Gesualdo Delfino
We extend the theory of quantum quenches to the case of -dimensional homogeneous systems with long range interactions. This is achieved treating the long range interactions as s…
Exact results for spin glass criticality
Gesualdo Delfino
In recent years scale invariant scattering theory provided the first exact access to the magnetic critical properties of two-dimensional statistical systems with quenched disorder.…
Critical exponents at the Nishimori point
Gesualdo Delfino
The Nishimori point of the random bond Ising model is a prototype of renormalization group fixed points with strong disorder. We show that the exact correlation length and crossove…
Nonuniversality in random criticality
Gesualdo Delfino
We consider two-dimensional Ising models coupled in presence of quenched disorder and use scale invariant scattering theory to exactly show the presence of a line of renormaliz…
On unitary time evolution out of equilibrium
Gesualdo Delfino, Marianna Sorba
We consider -dimensional quantum systems which for positive times evolve with a time-independent Hamiltonian in a nonequilibrium state that we keep generic in order to account f…
Mass of quantum topological excitations and order parameter finite size dependence
Gesualdo Delfino, Marianna Sorba
We consider the spontaneously broken regime of the vector model in space-time dimensions, with boundary conditions enforcing the presence of a topological defect lin…
Critical points in the model
Youness Diouane, Noel Lamsen, Gesualdo Delfino
The space of solutions of the exact renormalization group fixed point equations of the two-dimensional model, which we recently obtained within the scale invariant scatt…
Potts correlators and the static three-quark potential
M. Caselle, G. Delfino, P. Grinza +2
We discuss the two- and three-point correlators in the two-dimensional three-state Potts model in the high-temperature phase of the model. By using the form factor approach and per…
Decay of particles above threshold in the Ising field theory with magnetic field
G. Delfino, P. Grinza, G. Mussardo
The two-dimensional scaling Ising model in a magnetic field at critical temperature is integrable and possesses eight stable particles A_i (i=1,...,8) with different masses. The he…
Universal ratios along a line of critical points. The Ashkin--Teller model
G. Delfino, P. Grinza
The two-dimensional Ashkin-Teller model provides the simplest example of a statistical system exhibiting a line of critical points along which the critical exponents vary continous…
Correlation functions of disorder operators in massive ghost theories
G. Delfino, P. Mosconi, G. Mussardo
The two-dimensional ghost systems with negative integral central charge received much attention in the last years for their role in a number of applications and in connection with…
On the fermion-boson correspondence for correlation functions of disorder operators
G. Delfino, P. Grinza, G. Mussardo
When a quantum field theory possesses topological excitations in a phase with spontaneously broken symmetry, these are created by operators which are non-local with respect to the…
Sine-Gordon description of the scaling three-state Potts antiferromagnet on the square lattice
G. Delfino
The scaling limit as T->0 of the antiferromagnetic three-state Potts model on the square lattice is described by the sine-Gordon quantum field theory at a specific value of the cou…