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Irreversibility in quantum field theories with boundaries
(Springer, 2019-04)
We study conformal field theories with boundaries, and their boundary renormalization group (RG) flows, using methods from quantum information theory. Positivity of the relative entropy, together with unitarity and Lorentz ...
RG study of a non-local sine-Gordon model
(Elsevier Science, 2003-07)
We study a non-local version of the sine-Gordon model connected to a many-body system with backward and umklapp scattering processes. Using renormalization group methods we derive the flow equations for the couplings and ...
Lorentz symmetry violation with higher-order operators and renormalizationJournal of Physics: Conference Series
(Carlos Escobar (Universidade do Algarve), Jacob Noordmans (Universidade do Algarve), Ralf Lehnert (Indiana University) and Robertus Potting (Universidade do Algarve), 2018)