Exploració per tema "Relativity (Physics)"
Ara es mostren els items 1-20 de 30
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Agujeros negros: espacio-tiempo al límite
(2014-10-01)
Audiovisual
Accés obert -
Bouncing cosmologies via modified gravity in the ADM formalism: Application to loop quantum cosmology
(American Physical Society (APS), 2018-03-15)
Article
Accés obertWe consider the Arnowitt-Deser-Misner formalism as a tool to build bouncing cosmologies. In this approach, the foliation of the spacetime has to be fixed in order to go beyond general relativity modifying the gravitational ... -
Carbon-oxygen ultra-massive white dwarfs in general relativity
(Oxford University Press, 2023-08-01)
Article
Accés obertWe employ the La Plata stellar evolution code, lpcode, to compute the first set of constant rest-mass carbon–oxygen ultra-massive white dwarf evolutionary sequences for masses higher than 1.29 M¿ that fully take into account ... -
Cosmological perturbations in a class of fully covariant modified theories: application to models with the same background as standard LQC
(Springer, 2018-09-01)
Article
Accés obertBouncing cosmologies are obtained by adding to the Einstein–Hilbert action a term of the form -g---vf(¿), with ¿ a scalar depending on the Hubble parameter only, not on its derivatives, and which is here shown to arise ... -
Discurs d'obertura. VII Jornada de Divulgació de Relativitat
(2014-02-22)
Audiovisual
Accés obert -
Discurs d'obertura. VII Jornada de Divulgació de Relativitat
(2014-02-22)
Audiovisual
Accés obert -
Einstein a Catalunya 1923
(2014-02-22)
Audiovisual
Accés obert -
Einstein y el Quijote
(2016-02-10)
Audiovisual
Accés obert¿Hubo alguna conexión entre Albert Einstein y don Qujote de la Mancha? La hubo y, además, tuvo cierta relevancia en la trayectoria vital del padre de la relatividad. De todo lo cual tratará esta conferencia. -
Extended Galilean symmetries of non-relativistic strings
(2017-02-09)
Article
Accés obertWe consider two non-relativistic strings and their Galilean symmetries. These strings are obtained as the two possible non-relativistic (NR) limits of a relativistic string. One of them is non-vibrating and represents a ... -
Formulació relativista de les equacions de posicionament del sistema GPS
(Universitat Politècnica de Catalunya, 2008-11-17)
Projecte/Treball Final de Carrera
Accés obert -
Griffiths variational multisymplectic formulation for Lovelock gravity
(2020-08-24)
Article
Accés obertThis work is mainly devoted to constructing a multisymplectic description of Lovelock’s gravity, which is an extension of General Relativity. We establish the Griffiths variational problem for the Lovelock Lagrangian, ... -
INSPIRE: DI 1-1 Technical Note with assessment of state-of-the-art of earthquake precursors identification
(2014-12-25)
Report de recerca
Accés restringit per acord de confidencialitat -
INSPIRE: DI 1-2 Technical Note with definition of methodology for identification of earthquake signatures
(2014-12-25)
Report de recerca
Accés restringit per acord de confidencialitat -
INSPIRE: DI 2-1 Technical Note describing the design and development of the database with performance criteria
(2015-01-26)
Report de recerca
Accés restringit per acord de confidencialitat -
La relatividad general
(2016-01)
Article
Accés obert -
La matèria fosca i les seves alternatives o un cas d'hipòtesi pendent de confirmació
(2014-02-22)
Audiovisual
Accés obert -
Note on bouncing backgrounds
(American Physical Society (APS), 2018-05-15)
Article
Accés obertThe theory of inflation is one of the fundamental and revolutionary developments of modern cosmology that became able to explain many issues of the early Universe in the context of the standard cosmological model (SCM). ... -
On the meaning of Painlevé–Gullstrand synchronization
(2015-11-19)
Article
Accés obertFollowing on from two recent papers, here we examine the relationship between Newtonian gravitation and general relativity in more depth. This allows us to define a scalar potential which is just the proper time of the ... -
Paradojas, valga la redundancia
(2000-03)
Article
Accés obert -
Partículas huérfanas
(1997-11)
Article
Accés obert