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  1. Article: Gravitational waves in modified teleparallel theories of gravity.

    Abedi, Habib / Capozziello, Salvatore

    The European physical journal. C, Particles and fields

    2018  Volume 78, Issue 6, Page(s) 474

    Abstract: Teleparallel theory of gravity and its modifications have been studied extensively in literature. However, gravitational waves has not been studied enough in the framework of teleparallelism. In the present study, we discuss gravitational waves in ... ...

    Abstract Teleparallel theory of gravity and its modifications have been studied extensively in literature. However, gravitational waves has not been studied enough in the framework of teleparallelism. In the present study, we discuss gravitational waves in general theories of teleparallel gravity containing the torsion scalar
    Language English
    Publishing date 2018-06-09
    Publishing country France
    Document type Journal Article
    ZDB-ID 1459069-4
    ISSN 1434-6052 ; 1434-6044
    ISSN (online) 1434-6052
    ISSN 1434-6044
    DOI 10.1140/epjc/s10052-018-5967-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Noether symmetry approach in

    Bahamonde, Sebastian / Capozziello, Salvatore

    The European physical journal. C, Particles and fields

    2017  Volume 77, Issue 2, Page(s) 107

    Abstract: We consider the cosmology derived ... ...

    Abstract We consider the cosmology derived from
    Language English
    Publishing date 2017-02-16
    Publishing country France
    Document type Journal Article
    ZDB-ID 1459069-4
    ISSN 1434-6052 ; 1434-6044
    ISSN (online) 1434-6052
    ISSN 1434-6044
    DOI 10.1140/epjc/s10052-017-4677-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Classification of the Horndeski cosmologies via Noether symmetries.

    Capozziello, Salvatore / Dialektopoulos, Konstantinos F / Sushkov, Sergey V

    The European physical journal. C, Particles and fields

    2018  Volume 78, Issue 6, Page(s) 447

    Abstract: Adopting Noether point symmetries, we classify and integrate dynamical systems coming from Horndeski cosmologies. The method is particularly effective both to select the form of Horndeski models and to derive exact cosmological solutions. Starting from ... ...

    Abstract Adopting Noether point symmetries, we classify and integrate dynamical systems coming from Horndeski cosmologies. The method is particularly effective both to select the form of Horndeski models and to derive exact cosmological solutions. Starting from the Lagrangians selected by the Noether symmetries, it is possible to derive several modified theories of gravity like
    Language English
    Publishing date 2018-06-05
    Publishing country France
    Document type Journal Article
    ZDB-ID 1459069-4
    ISSN 1434-6052 ; 1434-6044
    ISSN (online) 1434-6052
    ISSN 1434-6044
    DOI 10.1140/epjc/s10052-018-5939-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Constraining

    Capozziello, S / Lambiase, G / Saridakis, E N

    The European physical journal. C, Particles and fields

    2017  Volume 77, Issue 9, Page(s) 576

    Abstract: We use Big Bang Nucleosynthesis (BBN) observational data on the primordial abundance of light elements to ... ...

    Abstract We use Big Bang Nucleosynthesis (BBN) observational data on the primordial abundance of light elements to constrain
    Language English
    Publishing date 2017-08-31
    Publishing country France
    Document type Journal Article
    ZDB-ID 1459069-4
    ISSN 1434-6052 ; 1434-6044
    ISSN (online) 1434-6052
    ISSN 1434-6044
    DOI 10.1140/epjc/s10052-017-5143-8
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Gravitational effective action at second order in curvature and gravitational waves.

    Calmet, Xavier / Capozziello, Salvatore / Pryer, Daniel

    The European physical journal. C, Particles and fields

    2017  Volume 77, Issue 9, Page(s) 589

    Abstract: ... anyway that this ghost is problematic. It simply implies a repulsive contribution to Newton's potential ... for deviations of Newton's potential. ...

    Abstract We consider the full effective theory for quantum gravity at second order in curvature including non-local terms. We show that the theory contains two new degrees of freedom beyond the massless graviton: namely a massive spin-2 ghost and a massive scalar field. Furthermore, we show that it is impossible to fine-tune the parameters of the effective action to eliminate completely the classical spin-2 ghost because of the non-local terms in the effective action. Being a classical field, it is not clear anyway that this ghost is problematic. It simply implies a repulsive contribution to Newton's potential. We then consider how to extract the parameters of the effective action and show that it is possible to measure, at least in principle, the parameters of the local terms independently of each other using a combination of observations of gravitational waves and measurements performed by pendulum type experiments searching for deviations of Newton's potential.
    Language English
    Publishing date 2017-09-07
    Publishing country France
    Document type Journal Article
    ZDB-ID 1459069-4
    ISSN 1434-6052 ; 1434-6044
    ISSN (online) 1434-6052
    ISSN 1434-6044
    DOI 10.1140/epjc/s10052-017-5172-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Constraining generalized non-local cosmology from Noether symmetries.

    Bahamonde, Sebastian / Capozziello, Salvatore / Dialektopoulos, Konstantinos F

    The European physical journal. C, Particles and fields

    2017  Volume 77, Issue 11, Page(s) 722

    Abstract: We study a generalized non-local theory of gravity which, in specific limits, can become either the curvature non-local or teleparallel non-local theory. Using the Noether symmetry approach, we find that the coupling functions coming from the non-local ... ...

    Abstract We study a generalized non-local theory of gravity which, in specific limits, can become either the curvature non-local or teleparallel non-local theory. Using the Noether symmetry approach, we find that the coupling functions coming from the non-local terms are constrained to be either exponential or linear in form. It is well known that in some non-local theories, a certain kind of exponential non-local couplings is needed in order to achieve a renormalizable theory. In this paper, we explicitly show that this kind of coupling does not need to be introduced by hand, instead, it appears naturally from the symmetries of the Lagrangian in flat Friedmann-Robertson-Walker cosmology. Finally, we find de Sitter and power-law cosmological solutions for different non-local theories. The symmetries for the generalized non-local theory are also found and some cosmological solutions are also achieved using the full theory.
    Language English
    Publishing date 2017-10-30
    Publishing country France
    Document type Journal Article
    ZDB-ID 1459069-4
    ISSN 1434-6052 ; 1434-6044
    ISSN (online) 1434-6052
    ISSN 1434-6044
    DOI 10.1140/epjc/s10052-017-5283-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: DNA Mutations via Chern-Simons Currents.

    Bajardi, Francesco / Altucci, Lucia / Benedetti, Rosaria / Capozziello, Salvatore / Sorbo, Maria Rosaria Del / Franci, Gianluigi / Altucci, Carlo

    European physical journal plus

    2021  Volume 136, Issue 10, Page(s) 1080

    Abstract: We test the validity of a possible schematization of DNA structure and dynamics based on the Chern-Simons theory, that is a topological field theory mostly considered in the context of effective gravity theories. By means of the expectation value of the ... ...

    Abstract We test the validity of a possible schematization of DNA structure and dynamics based on the Chern-Simons theory, that is a topological field theory mostly considered in the context of effective gravity theories. By means of the expectation value of the Wilson Loop, derived from this analogue gravity approach, we find the point-like curvature of genomic strings in KRAS human gene and COVID-19 sequences, correlating this curvature with the genetic mutations. The point-like curvature profile, obtained by means of the Chern-Simons currents, can be used to infer the position of the given mutations within the genetic string. Generally, mutations take place in the highest Chern-Simons current gradient locations and subsequent mutated sequences appear to have a smoother curvature than the initial ones, in agreement with a free energy minimization argument.
    Language English
    Publishing date 2021-10-28
    Publishing country Germany
    Document type Journal Article
    ISSN 2190-5444
    ISSN (online) 2190-5444
    DOI 10.1140/epjp/s13360-021-01960-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Noether symmetries in Gauss-Bonnet-teleparallel cosmology.

    Capozziello, Salvatore / De Laurentis, Mariafelicia / Dialektopoulos, Konstantinos F

    The European physical journal. C, Particles and fields

    2016  Volume 76, Issue 11, Page(s) 629

    Abstract: A generalized teleparallel cosmological model, [Formula: see text], containing the torsion ... ...

    Abstract A generalized teleparallel cosmological model, [Formula: see text], containing the torsion scalar
    Language English
    Publishing date 2016-11-18
    Publishing country France
    Document type Journal Article
    ZDB-ID 1459069-4
    ISSN 1434-6052 ; 1434-6044
    ISSN (online) 1434-6052
    ISSN 1434-6044
    DOI 10.1140/epjc/s10052-016-4491-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Nonlocal teleparallel cosmology.

    Bahamonde, Sebastian / Capozziello, Salvatore / Faizal, Mir / Nunes, Rafael C

    The European physical journal. C, Particles and fields

    2017  Volume 77, Issue 9, Page(s) 628

    Abstract: Even though it is not possible to differentiate general relativity from teleparallel gravity using classical experiments, it could be possible to discriminate between them by quantum gravitational effects. These effects have motivated the introduction of ...

    Abstract Even though it is not possible to differentiate general relativity from teleparallel gravity using classical experiments, it could be possible to discriminate between them by quantum gravitational effects. These effects have motivated the introduction of nonlocal deformations of general relativity, and similar effects are also expected to occur in teleparallel gravity. Here, we study nonlocal deformations of teleparallel gravity along with its cosmological solutions. We observe that nonlocal teleparallel gravity (like nonlocal general relativity) is consistent with the present cosmological data obtained by SNe Ia + BAO + CC + [Formula: see text] observations. Along this track, future experiments probing nonlocal effects could be used to test whether general relativity or teleparallel gravity gives the most consistent picture of gravitational interaction.
    Language English
    Publishing date 2017-09-20
    Publishing country France
    Document type Journal Article
    ZDB-ID 1459069-4
    ISSN 1434-6052 ; 1434-6044
    ISSN (online) 1434-6052
    ISSN 1434-6044
    DOI 10.1140/epjc/s10052-017-5210-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: A way forward for fundamental physics in space.

    Bassi, A / Cacciapuoti, L / Capozziello, S / Dell'Agnello, S / Diamanti, E / Giulini, D / Iess, L / Jetzer, P / Joshi, S K / Landragin, A / Poncin-Lafitte, C Le / Rasel, E / Roura, A / Salomon, C / Ulbricht, H

    NPJ microgravity

    2022  Volume 8, Issue 1, Page(s) 49

    Abstract: ... in the fundamental physics domain. They include the validity of Einstein's Equivalence principle, the origin and ...

    Abstract Space-based research can provide a major leap forward in the study of key open questions in the fundamental physics domain. They include the validity of Einstein's Equivalence principle, the origin and the nature of dark matter and dark energy, decoherence and collapse models in quantum mechanics, and the physics of quantum many-body systems. Cold-atom sensors and quantum technologies have drastically changed the approach to precision measurements. Atomic clocks and atom interferometers as well as classical and quantum links can be used to measure tiny variations of the space-time metric, elusive accelerations, and faint forces to test our knowledge of the physical laws ruling the Universe. In space, such instruments can benefit from unique conditions that allow improving both their precision and the signal to be measured. In this paper, we discuss the scientific priorities of a space-based research program in fundamental physics.
    Language English
    Publishing date 2022-11-02
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 2823626-9
    ISSN 2373-8065
    ISSN 2373-8065
    DOI 10.1038/s41526-022-00229-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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