A. Pereira

collaborators

2 papers

cond-mat.stat-mech2026

Static vacancies as parametrized conformal defects in the critical $J_{1}$ -- $J_{2}$ transverse-field Ising chain

R. L. Silva, R. C. Silva, R. J. C. Lopes +1

We revisit the problem of two static nonmagnetic vacancies in the transverse-field Ising chain with first- and second-neighbor couplings $J_{1}$ and $J_{2}$ , now on the critical line,…

cond-mat.stat-mech2024

First-order and Berezinskii-Kosterlitz-Thouless phase transitions in two-dimensional generalized XY models

P. A. da Silva, R. J. Campos-Lopes, A. R. Pereira

The aim of this paper is to illustrate that generalized two-dimensional XY models (proposed by Romano and Zagrebnov) may also support a first-order phase transition. Two approaches…

Static vacancies as parametrized conformal defects in the critical J1​--J2​ transverse-field Ising chain

First-order and Berezinskii-Kosterlitz-Thouless phase transitions in two-dimensional generalized XY models

Static vacancies as parametrized conformal defects in the critical $J_{1}$ -- $J_{2}$ transverse-field Ising chain