3 papers
cond-mat.stat-mech2020
Integrability and scattering of the boson field theory on a lattice
Manuel Campos, German Sierra, Esperanza Lopez
A free boson on a lattice is the simplest field theory one can think of. Its partition function can be easily computed in momentum space. However, this straightforward solution hid…
hep-th2020
Quantum corrected gravitational potential beyond monopole-monopole interactions
G. P. de Brito, M. G. Campos, L. P. R. Ospedal +1
We investigate spin- and velocity-dependent contributions to the gravitational inter-particle potential. The methodology adopted here is based on the expansion of the effective act…
cond-mat.stat-mech2019
Tensor renormalization group in bosonic field theory
Manuel Campos, German Sierra, Esperanza Lopez
We compute the partition function of a massive free boson in a square lattice using a tensor network algorithm. We introduce a singular value decomposition (SVD) of continuous matr…