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  1. Article: Cosmological evolution of the Higgs boson's vacuum expectation value.

    Calmet, Xavier

    The European physical journal. C, Particles and fields

    2017  Volume 77, Issue 11, Page(s) 729

    Abstract: We point out that the expansion of the universe leads to a cosmological time evolution of the vacuum expectation of the Higgs boson. Within the standard model of particle physics, the cosmological time evolution of the vacuum expectation of the Higgs ... ...

    Abstract We point out that the expansion of the universe leads to a cosmological time evolution of the vacuum expectation of the Higgs boson. Within the standard model of particle physics, the cosmological time evolution of the vacuum expectation of the Higgs leads to a cosmological time evolution of the masses of the fermions and of the electroweak gauge bosons, while the scale of Quantum Chromodynamics (QCD) remains constant. Precise measurements of the cosmological time evolution of
    Language English
    Publishing date 2017-11-01
    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/s10052-017-5324-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Quantum mechanics, gravity and modified quantization relations.

    Calmet, Xavier

    Philosophical transactions. Series A, Mathematical, physical, and engineering sciences

    2015  Volume 373, Issue 2047

    Abstract: In this paper, we investigate a possible energy scale dependence of the quantization rules and, in particular, from a phenomenological point of view, an energy scale dependence of an effective [Formula: see text] (reduced Planck's constant). We set a ... ...

    Abstract In this paper, we investigate a possible energy scale dependence of the quantization rules and, in particular, from a phenomenological point of view, an energy scale dependence of an effective [Formula: see text] (reduced Planck's constant). We set a bound on the deviation of the value of [Formula: see text] at the muon scale from its usual value using measurements of the anomalous magnetic moment of the muon. Assuming that inflation has taken place, we can conclude that nature is described by a quantum theory at least up to an energy scale of about 10(16) GeV.
    Language English
    Publishing date 2015-08-06
    Publishing country England
    Document type Journal Article
    ZDB-ID 208381-4
    ISSN 1471-2962 ; 0080-4614 ; 0264-3820 ; 0264-3952 ; 1364-503X
    ISSN (online) 1471-2962
    ISSN 0080-4614 ; 0264-3820 ; 0264-3952 ; 1364-503X
    DOI 10.1098/rsta.2014.0244
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Quantum Hair from Gravity.

    Calmet, Xavier / Casadio, Roberto / Hsu, Stephen D H / Kuipers, Folkert

    Physical review letters

    2022  Volume 128, Issue 11, Page(s) 111301

    Abstract: We explore the relationship between the quantum state of a compact matter source and of its asymptotic graviton field. For a matter source in an energy eigenstate, the graviton state is determined at leading order by the energy eigenvalue. Insofar as ... ...

    Abstract We explore the relationship between the quantum state of a compact matter source and of its asymptotic graviton field. For a matter source in an energy eigenstate, the graviton state is determined at leading order by the energy eigenvalue. Insofar as there are no accidental energy degeneracies there is a one to one map between graviton states on the boundary of spacetime and the matter source states. Effective field theory allows us to compute a purely quantum gravitational effect which causes the subleading asymptotic behavior of the graviton state to depend on the internal structure of the source. This establishes the existence of ubiquitous quantum hair due to gravitational effects.
    Language English
    Publishing date 2022-04-01
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.128.111301
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Dark matter in quantum gravity.

    Calmet, Xavier / Latosh, Boris

    The European physical journal. C, Particles and fields

    2018  Volume 78, Issue 6, Page(s) 520

    Abstract: We show that quantum gravity, whatever its ultra-violet completion might be, could account for dark matter. Indeed, besides the massless gravitational field recently observed in the form of gravitational waves, the spectrum of quantum gravity contains ... ...

    Abstract We show that quantum gravity, whatever its ultra-violet completion might be, could account for dark matter. Indeed, besides the massless gravitational field recently observed in the form of gravitational waves, the spectrum of quantum gravity contains two massive fields respectively of spin 2 and spin 0. If these fields are long-lived, they could easily account for dark matter. In that case, dark matter would be very light and only gravitationally coupled to the standard model particles.
    Language English
    Publishing date 2018-06-25
    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/s10052-018-6005-8
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Book ; Online: Quantum Aspects of Black Holes

    Calmet, Xavier

    (Fundamental Theories of Physics ; 178)

    2015  

    Abstract: Beginning with an overview of the theory of black holes by the editor, this book presents a collection of ten chapters by leading physicists dealing with the variety of quantum mechanical and quantum gravitational effects pertinent to black holes. The ... ...

    Author's details edited by Xavier Calmet
    Series title Fundamental Theories of Physics ; 178
    Abstract Beginning with an overview of the theory of black holes by the editor, this book presents a collection of ten chapters by leading physicists dealing with the variety of quantum mechanical and quantum gravitational effects pertinent to black holes. The contributions address topics such as Hawking radiation, the thermodynamics of black holes, the information paradox and firewalls, Monsters, primordial black holes, self-gravitating Bose-Einstein condensates, the formation of small black holes in high energetic collisions of particles, minimal length effects in black holes and small black holes at the Large Hadron Collider. Viewed as a whole the collection provides stimulating reading for researchers and graduate students seeking a summary of the quantum features of black holes
    Keywords Physics ; Quantum theory
    Language English
    Size Online-Ressource (XI, 322 p. 57 illus., 23 illus. in color), online resource
    Publisher Springer
    Publishing place Cham u.a.
    Document type Book ; Online
    ISBN 9783319108513 ; 9783319108520 ; 3319108514 ; 3319108522
    DOI 10.1007/978-3-319-10852-0
    Database Former special subject collection: coastal and deep sea fishing

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  6. Book ; Online: Quantum Aspects of Black Holes

    Calmet, Xavier

    (Fundamental Theories of Physics ; 178)

    2015  

    Abstract: Beginning with an overview of the theory of black holes by the editor, this book presents a collection of ten chapters by leading physicists dealing with the variety of quantum mechanical and quantum gravitational effects pertinent to black holes. The ... ...

    Author's details edited by Xavier Calmet
    Series title Fundamental Theories of Physics ; 178
    Abstract Beginning with an overview of the theory of black holes by the editor, this book presents a collection of ten chapters by leading physicists dealing with the variety of quantum mechanical and quantum gravitational effects pertinent to black holes. The contributions address topics such as Hawking radiation, the thermodynamics of black holes, the information paradox and firewalls, Monsters, primordial black holes, self-gravitating Bose-Einstein condensates, the formation of small black holes in high energetic collisions of particles, minimal length effects in black holes and small black holes at the Large Hadron Collider. Viewed as a whole the collection provides stimulating reading for researchers and graduate students seeking a summary of the quantum features of black holes
    Keywords Physics ; Quantum theory
    Language English
    Size Online-Ressource (XI, 322 p. 57 illus., 23 illus. in color), online resource
    Publisher Springer
    Publishing place Cham u.a.
    Document type Book ; Online
    ISBN 9783319108513 ; 9783319108520 ; 3319108514 ; 3319108522
    DOI 10.1007/978-3-319-10852-0
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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  7. Article: Non-minimal Coupling of the Higgs Boson to Curvature in an Inflationary Universe.

    Calmet, Xavier / Kuntz, Iberê / Moss, Ian G

    Foundations of physics

    2017  Volume 48, Issue 1, Page(s) 110–120

    Abstract: In the absence of new physics ... ...

    Abstract In the absence of new physics around
    Language English
    Publishing date 2017-12-18
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1470577-1
    ISSN 1572-9516 ; 0015-9018
    ISSN (online) 1572-9516
    ISSN 0015-9018
    DOI 10.1007/s10701-017-0131-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. 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: 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 ...

    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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  9. Article: Gravitational radiation in quantum gravity.

    Calmet, Xavier / El-Menoufi, Basem Kamal / Latosh, Boris / Mohapatra, Sonali

    The European physical journal. C, Particles and fields

    2018  Volume 78, Issue 9, Page(s) 780

    Abstract: The effective field theory of quantum gravity generically predicts non-locality to be present in the effective action, which results from the low-energy propagation of gravitons and massless matter. Working to second order in gravitational curvature, we ... ...

    Abstract The effective field theory of quantum gravity generically predicts non-locality to be present in the effective action, which results from the low-energy propagation of gravitons and massless matter. Working to second order in gravitational curvature, we reconsider the effects of quantum gravity on the gravitational radiation emitted from a binary system. In particular, we calculate for the first time the leading order quantum gravitational correction to the classical quadrupole radiation formula which appears at second order in Newton's constant.
    Language English
    Publishing date 2018-09-26
    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/s10052-018-6265-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Bounds on the nonminimal coupling of the Higgs boson to gravity.

    Atkins, Michael / Calmet, Xavier

    Physical review letters

    2013  Volume 110, Issue 5, Page(s) 51301

    Abstract: We derive the first bound on the value of the Higgs boson nonminimal coupling to the Ricci scalar. We show that the recent discovery of the Higgs boson at the Large Hadron Collider at CERN implies that the nonminimal coupling is smaller than 2.6×10(15). ...

    Abstract We derive the first bound on the value of the Higgs boson nonminimal coupling to the Ricci scalar. We show that the recent discovery of the Higgs boson at the Large Hadron Collider at CERN implies that the nonminimal coupling is smaller than 2.6×10(15).
    Language English
    Publishing date 2013-02-01
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.110.051301
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Bonn / Germany

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