Zobrazeno 1 - 10
of 1 839
pro vyhledávání: '"Herrera, L. A."'
Autor:
Herrera, L.
Publikováno v:
Entropy, 26, 931, (2024)
The Landauer principle establishes a lower bound in the amount of energy that should be dissipated in the erasure of one bit of information. The specific value of this dissipated energy is tightly related to the definition of entropy. In this article
Externí odkaz:
http://arxiv.org/abs/2411.07897
Publikováno v:
SYMMETRY, 16, 1422, (2024)
Exact solutions are presented which describe, either the evolution of fluid distributions corresponding to a ghost star (vanishing total mass), or describing the evolution of fluid distributions which attain the ghost star status at some point of the
Externí odkaz:
http://arxiv.org/abs/2411.04544
Autor:
Escamilla-Herrera, L. F., Domínguez-Derramadero, J. M., Alba-Rosales, J. E., García-Rodríguez, F. J., Medina-Cázares, O. M., Gutiérrez-Juárez, G.
In a recent work, assuming a Beer-Lambert optical absorption and a Gaussian laser time profile, the exact solutions for a 1D-photoacoustic(PA)-boundary value problem predict a null pressure for optically strong absorbent materials. To overcome this,
Externí odkaz:
http://arxiv.org/abs/2406.13852
Publikováno v:
Symmetry 16, 562, (2024)
We explore an idea put forward many years ago by Zeldovich and Novikov concerning the existence of compact objects endowed with arbitrarily small mass. The energy-density of such objects, which we call ``Ghost stars'', is negative in some regions of
Externí odkaz:
http://arxiv.org/abs/2405.09480
Autor:
Herrera, L., Di Prisco, A.
Publikováno v:
Phys. Rev. D 109, 064071, (2024)
The concept of cracking refers to the tendency of a fluid distribution to "split'', once it abandons the equilibrium. In this manuscript we develop a general formalism to describe the occurrence of cracking within a dissipative fluid distribution, in
Externí odkaz:
http://arxiv.org/abs/2404.04901
Publikováno v:
Symmetry, 16, 341, (2024)
A semi--numerical approach proposed many years ago for describing gravitational collapse in the post--quasi--static approximation, is modified in order to avoid the numerical integration of the basic differential equations the approach is based upon.
Externí odkaz:
http://arxiv.org/abs/2403.07550
Autor:
Duran, A., Pérez-Rodríguez, J. L., Herrera, L. K., Jiménez-de-Haro, M. C., Robador, M. D., Justo, A., Blanes, J. M., Pérez-Ferrer, J. C.
Results are presented from several samples taken from leaves of the Pardon Portico of Mosque-Cathedral of Cordoba, where an alteration on their surface was detected. Metal samples analyzed using X-ray microanalysis and powder x-ray diffraction were p
Externí odkaz:
http://arxiv.org/abs/2401.16538
Publikováno v:
Phys. Rev. D 109, 024005 (2024)
It is shown that the evolution of an axially and reflection symmetric fluid distribution, satisfying the Tolman condition for thermal equilibrium, is not accompanied by the emission of gravitational radiation. This result, which was conjectured by Bo
Externí odkaz:
http://arxiv.org/abs/2401.05959
Autor:
Toxqui, M. L. López, Fernández, C. H. Zepeda, Herrera, L. F. Rebolledo, Alonso, B. De Celis, Barbosa, E. Moreno
Positron Emission Tomography (PET) is a Nuclear Medicine technique that creates images that allow the study of metabolic activity and organ function using radiopharmaceuticals. Continuous improvement of scintillation detectors for radiation in PET as
Externí odkaz:
http://arxiv.org/abs/2311.03522
Publikováno v:
Entropy 25, 1338 (2023)
We carry out a systematic study on the motion of test particles in the region inner to the naked singularity of a quasi--hyperbolically symmetric $\gamma$-metric. The geodesic equations are written and analyzed in detail. The obtained results are con
Externí odkaz:
http://arxiv.org/abs/2309.08409