57 citations · 216 across the 11 of their papers we have counts for
11 papers
Thermal-induced Local Imbalance in Repulsive Binary Bose Mixtures
Gerard Pascual, Gabriele Spada, Sebastiano Pilati +2
We study repulsive two-component Bose mixtures with equal populations and confined in a finite-size box through path-integral Monte Carlo simulations. For different values of the $…
Symmetry-broken perturbation theory to large orders in antiferromagnetic phases
R. Garioud, F. Šimkovic, R. Rossi +4
We introduce a spin-symmetry-broken extension of the connected determinant algorithm [Phys. Rev. Lett. 119, 045701 (2017)]. The resulting systematic perturbative expansions around…
Thermodynamics of a dilute Bose gas: A path-integral Monte Carlo study
Gabriele Spada, Sebastiano Pilati, Stefano Giorgini
We present precise path-integral Monte-Carlo results for the thermodynamics of a homogeneous dilute Bose gas. Pressure and energy are calculated as a function of temperature both b…
High-order expansion around BCS theory
G. Spada, R. Rossi, F. Simkovic +4
We demonstrate that summation of connected diagrams to high order starting from a BCS hamiltonian is a viable generic unbiased approach for strongly correlated fermions in supercon…
Self-Dualities and Renormalization Dependence of the Phase Diagram in 3d Vector Models
Giacomo Sberveglieri, Marco Serone, Gabriele Spada
In the classically unbroken phase, 3d symmetric vector models admit two equivalent descriptions connected by a strong-weak duality closely related to the one found by…
Renormalization Scheme Dependence, RG Flow and Borel Summability in Theories in
Giacomo Sberveglieri, Marco Serone, Gabriele Spada
Renormalization group (RG) and resummation techniques have been used in -component theories at fixed dimensions below four to determine the presence of non-trivial IR fixe…
Theory II: The Broken Phase Beyond NNNN(NNNN)LO
Marco Serone, Gabriele Spada, Giovanni Villadoro
We extend the study of the two-dimensional euclidean theory initiated in ref. [1] to the broken phase. In particular, we compute in perturbation theory up to N$…
Theory I: The Symmetric Phase Beyond NNNNNNNNLO
Marco Serone, Gabriele Spada, Giovanni Villadoro
Perturbation theory of a large class of scalar field theories in can be shown to be Borel resummable using arguments based on Lefschetz thimbles. As an example we study in de…
The Power of Perturbation Theory
Marco Serone, Gabriele Spada, Giovanni Villadoro
We study quantum mechanical systems with a discrete spectrum. We show that the asymptotic series associated to certain paths of steepest-descent (Lefschetz thimbles) are Borel resu…
Instantons from Perturbation Theory
Marco Serone, Gabriele Spada, Giovanni Villadoro
In quantum mechanics and quantum field theory perturbation theory generically requires the inclusion of extra contributions non-perturbative in the coupling, such as instantons, to…
CP Violation Tests of Alignment Models at LHCII
Diptimoy Ghosh, Paride Paradisi, Gilad Perez +1
We analyse the low-energy phenomenology of alignment models both model-independently and within supersymmetric (SUSY) scenarios focusing on their CP violation tests at LHCII. Assum…