3 papers
hep-th2025
The Komar charge in presence of the Holst term and the gravitational Witten effect
José Luis V. Cerdeira, Tomás Ortín
In the first-order formalism, the Einstein--Hilbert action can be modified by the addition of a Holst term multiplied by the Barbero parameter . This modification breaks parity…
hep-th2025
On-shell Lagrangians as total derivatives and the generalized Komar charge
José Luis V. Cerdeira, Tomás Ortín
Lagrangians which transform homogeneously under a global transformation of the fields (a global rescaling, for instance) can be written on-shell as a total derivative which has a u…
gr-qc2025
A note on the calculation of the Komar integral in the Lorentzian Taub-NUT spacetime
Gabriele Barbagallo, José Luis V. Cerdeira, Carmen Gómez-Fayrén +1
It has recently been shown that one can derive consistent thermodynamical expressions in the Lorentzian Taub--NUT spacetime keeping the Misner-string singularities and taking into…