BackBrowsing by Author "Brizuela Cieza, David"
Now showing items 1-10 of 10
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A formalism based on moments for classical and quantum cosmology
(IOP Publishing LTD, 2015)We compare the classical and quantum description of systems with one degree of freedom with an effective formalism based on statistical moments. Within this formalism the similarities and differences between the classical ... -
An effective model for the quantum Schwarzschild black hole
; ; Vera Jiménez, Raül
(Elsevier, 2022-06-10)
We present an effective theory to describe the quantization of spherically symmetric vacuum motivated by loop quantum gravity. We include anomaly-free holonomy corrections through a canonical transformation and a linear ... -
Belinskii-Khalatnikov-Lifshitz (BKL) konjetura: analisia eta formalismo hamiltondarra
(2020-01-16)[EUS] Gradu amaierako lan hau BKL konjetura aztertzera bideratu dugu. Proposatu zuten fisikarien omenez izendatua (Belinskii, Khalatnikov eta Lifshitz), konjetura honek espazio-motako singularitate orokor baten portaera ... -
Denboraren gezia
(Servicio Editorial de la Universidad del País Vasco/Euskal Herriko Unibertsitatearen Argitalpen Zerbitzua, 2015)Denboraren gezia denboran norantza berezi bat finkatzen duen edozein efektu edo prozesu bezala defini daiteke. Artikulu honetan denboraren geziaren kontzeptua aztertuko da fisikaren arlo desberdinen ikuspuntutik. Funtsean ... -
EPR paradoxatik Bell-en teoremara
(Servicio Editorial de la Universidad del País Vasco/Euskal Herriko Unibertsitatearen Argitalpen Zerbitzua, 2002)Bere lehen pausoak eman zituenetik kuantikak eraso asko jasan ditu; izan ere, naturaren ikuspegi oso berezia eskeintzen digu, betidanik onartu izan diren hipotesi asko hankaz gora ipiniz. Lan honetan teoria horrek jasan ... -
Holonomy and Inverse-Triad Corrections in Spherical Models Coupled to Matter
(Springer, 2021-04)Loop quantum gravity introduces two characteristic modifications in the classical constraints of general relativity: the holonomy and inverse-triad corrections. In this paper, a systematic construction of anomaly-free ... -
Kiribilen kosmologia kuantikorako sarrera
(2015-06-05)Gradu amaierako lan hau kiribilen kosmologia kuantikorako sarrera bat da. Lan honek 4 kapi- tulu ditu. Lehenengoan, sarrera bezala grabitazio kuantikoak izan duen bilakaera historikoa jaso da, halako teoria bat garatzeko ... -
Loop Quantum Gravity Effects on Spherical Black Holes. A Covariant Approach to Singularity Resolution.
(2023-05-12)Presentamos una teoría efectiva covariante para la gravedad cuántica de lazos en simetría esférica. La principal característica del modelo es que las correcciones cuánticas se introducen de tal forma que el modelo es ... -
Mecánica cuántica con hamiltonianos no hermíticos: hamiltonianos PT simétricos
(2021-12-03)[ES] En el marco de la mecánica cuántica, se han estudiado profundamente los espectros y las funciones de onda de los hamiltonianos hermíticos, ya que proporcionan un espectro de energías real y una evolución temporal ... -
Quantum-Gravitational Effects on Primordial Power Spectra in Slow-Roll Inflationary Models
(MDPI, 2018-01-08)We review the computation of the power spectra of inflationary gauge-invariant perturbations in the context of canonical quantum gravity for generic slow-roll models. A semiclassical approximation, based on an expansion ...