51 citations · 175 across the 16 of their papers we have counts for
17 papers
An extension of the Linear Delta Expansion to Superspace
M. C. B. Abdalla, J. A. Helayël-Neto, Daniel L. Nedel +1
We introduce and discuss the method of Linear Delta Expansion for the calculation of effective potentials in superspace, by adopting the improved version of the super-Feynman rules…
Strings in Horizons, Dissipation and a Possible Interpretation of the Hagedorn Temperature
M. C. Batoni Abdalla, M. Botta Cantcheff, D. L. Nedel
We consider the entanglement of closed bosonic strings intersecting the event horizon of a Rindler spacetime and, by using some simplified (rather semiclassical) arguments and some…
General Unitary TFD Formulation for Superstrings
M. C. B. Abdalla, A. L. Gadelha, Daniel L. Nedel
A generalization of the Thermo Field Dynamics (TFD) for fermionic degrees of freedom is proposed. Such a generalization follows a previous one where the SU(1,1) thermal group was u…
Closed String Thermal Torus From Thermo Field Dynamics
M. C. B Abdalla, A. L. Gadelha, Daniel L. Nedel
In this Letter a topological interpretation for the string thermal vacuum in the Thermo Field Dynamics (TFD) approach is given. As a consequence, the relationship between the Imagi…
On the entropy operator for the general SU(1,1) TFD formulation
M. C. Abdalla, A. L. Gadelha, Daniel L. Nedel
In this letter, an entropy operator for the general unitary SU(1,1) TFD formulation is proposed and used to lead a bosonic system from zero to finite temperature. Namely, consideri…
General Unitary SU(1,1) TFD Formulation
M. C. B. Abdalla, A. L. Gadelha
In this work we discuss a generalization for the thermal Bogoliubov transformation in the context of a hermitian general SU(1,1) transformation generator. The TFD tilde conjugation…