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Quantum anomalies in string-inspired running vacuum universe: Inflation and axion dark matter

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Quantum anomalies in string-inspired running vacuum universe : Inflation and axion dark matter. / Basilakos, Spyros; Mavromatos, Nick E.; Solà Peracaula, Joan.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 803, 135342, 10.04.2020.

Research output: Contribution to journalArticle

Harvard

Basilakos, S, Mavromatos, NE & Solà Peracaula, J 2020, 'Quantum anomalies in string-inspired running vacuum universe: Inflation and axion dark matter', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 803, 135342. https://doi.org/10.1016/j.physletb.2020.135342

APA

Basilakos, S., Mavromatos, N. E., & Solà Peracaula, J. (2020). Quantum anomalies in string-inspired running vacuum universe: Inflation and axion dark matter. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 803, [135342]. https://doi.org/10.1016/j.physletb.2020.135342

Vancouver

Basilakos S, Mavromatos NE, Solà Peracaula J. Quantum anomalies in string-inspired running vacuum universe: Inflation and axion dark matter. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2020 Apr 10;803. 135342. https://doi.org/10.1016/j.physletb.2020.135342

Author

Basilakos, Spyros ; Mavromatos, Nick E. ; Solà Peracaula, Joan. / Quantum anomalies in string-inspired running vacuum universe : Inflation and axion dark matter. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2020 ; Vol. 803.

Bibtex Download

@article{278d1a2d40a549328cdb3d60a87847b0,
title = "Quantum anomalies in string-inspired running vacuum universe: Inflation and axion dark matter",
abstract = "In this letter, we elaborate further on a Cosmological “Running-Vacuum” type model for the Universe, suggested previously by the authors [1,2], within the context of a string-inspired effective theory in the presence of a Kalb-Ramond (KR) gravitational axion field which descends from the antisymmetric tensor of the massless gravitational string multiplet. In the presence of this field, which has anomalous CP violating interactions with the gravitons, primordial gravitational waves induce gravitational anomalies, which in turn are responsible for the appearance of H2 and H4 contributions to the vacuum energy density, these terms being characteristic of generic “running-vacuum-model (RVM) type”, where H is the Hubble parameter. In this work we prove in detail the appearance of the H4 terms due to gravitational-anomaly-induced condensates in the energy density of the primordial Universe, which can self-consistently induce inflation, and subsequent exit from it, according to the generic features of RVM. We also argue in favour of the robustness of our results, which were derived within an effective low-energy field theory approach, against Ultra Violet completion of the theory. During the radiation and matter-dominated eras, gravitational anomalies cancel, as required for the consistency of the quantum matter/radiation field theory. However, chiral and QCD-axion-type anomalies survive and have important consequences for both cosmic magnetogenesis and axionic dark matter in the Universe. Finally, the stringy RVM scenario presented here predicts quintessence-like dynamical dark energy for the current Universe, which is compatible with the existing fitting analyses of such model against observations.",
author = "Spyros Basilakos and Mavromatos, {Nick E.} and {Sol{\`a} Peracaula}, Joan",
year = "2020",
month = "4",
day = "10",
doi = "10.1016/j.physletb.2020.135342",
language = "English",
volume = "803",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",

}

RIS (suitable for import to EndNote) Download

TY - JOUR

T1 - Quantum anomalies in string-inspired running vacuum universe

T2 - Inflation and axion dark matter

AU - Basilakos, Spyros

AU - Mavromatos, Nick E.

AU - Solà Peracaula, Joan

PY - 2020/4/10

Y1 - 2020/4/10

N2 - In this letter, we elaborate further on a Cosmological “Running-Vacuum” type model for the Universe, suggested previously by the authors [1,2], within the context of a string-inspired effective theory in the presence of a Kalb-Ramond (KR) gravitational axion field which descends from the antisymmetric tensor of the massless gravitational string multiplet. In the presence of this field, which has anomalous CP violating interactions with the gravitons, primordial gravitational waves induce gravitational anomalies, which in turn are responsible for the appearance of H2 and H4 contributions to the vacuum energy density, these terms being characteristic of generic “running-vacuum-model (RVM) type”, where H is the Hubble parameter. In this work we prove in detail the appearance of the H4 terms due to gravitational-anomaly-induced condensates in the energy density of the primordial Universe, which can self-consistently induce inflation, and subsequent exit from it, according to the generic features of RVM. We also argue in favour of the robustness of our results, which were derived within an effective low-energy field theory approach, against Ultra Violet completion of the theory. During the radiation and matter-dominated eras, gravitational anomalies cancel, as required for the consistency of the quantum matter/radiation field theory. However, chiral and QCD-axion-type anomalies survive and have important consequences for both cosmic magnetogenesis and axionic dark matter in the Universe. Finally, the stringy RVM scenario presented here predicts quintessence-like dynamical dark energy for the current Universe, which is compatible with the existing fitting analyses of such model against observations.

AB - In this letter, we elaborate further on a Cosmological “Running-Vacuum” type model for the Universe, suggested previously by the authors [1,2], within the context of a string-inspired effective theory in the presence of a Kalb-Ramond (KR) gravitational axion field which descends from the antisymmetric tensor of the massless gravitational string multiplet. In the presence of this field, which has anomalous CP violating interactions with the gravitons, primordial gravitational waves induce gravitational anomalies, which in turn are responsible for the appearance of H2 and H4 contributions to the vacuum energy density, these terms being characteristic of generic “running-vacuum-model (RVM) type”, where H is the Hubble parameter. In this work we prove in detail the appearance of the H4 terms due to gravitational-anomaly-induced condensates in the energy density of the primordial Universe, which can self-consistently induce inflation, and subsequent exit from it, according to the generic features of RVM. We also argue in favour of the robustness of our results, which were derived within an effective low-energy field theory approach, against Ultra Violet completion of the theory. During the radiation and matter-dominated eras, gravitational anomalies cancel, as required for the consistency of the quantum matter/radiation field theory. However, chiral and QCD-axion-type anomalies survive and have important consequences for both cosmic magnetogenesis and axionic dark matter in the Universe. Finally, the stringy RVM scenario presented here predicts quintessence-like dynamical dark energy for the current Universe, which is compatible with the existing fitting analyses of such model against observations.

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U2 - 10.1016/j.physletb.2020.135342

DO - 10.1016/j.physletb.2020.135342

M3 - Article

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VL - 803

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

M1 - 135342

ER -

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