Phase transition and monopole production in supergravity inflation

Kamada, Kohei; Nakayama, Kazunori; Yokoyama, Jun′ichi

doi:10.1103/physrevd.85.043503

Cited by 6 publications

(6 citation statements)

References 84 publications

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“…1 In fact, the resulting baryon asymmetry is unchanged in the presence of a mass for neutrinos [4][10]. 2 We note the relation of this work to some existing works: "Cogenesis" of dark and visible matter has been considered in [15], chiral fermions have played a large role in the Darkogenesis scenario [16], and the Hypercharge chiral anomaly of the Standard Model, also used to generate a visible asymmetry in e.g. [17] and references therein, has been used to engineer a dark asymmetry [18].…”

Section: Introductionmentioning

confidence: 91%

Chiral gravitational waves and baryon superfluid dark matter

Alexander

McDonough

Spergel

2018

J. Cosmol. Astropart. Phys.

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We develop a unified model of darkgenesis and baryogenesis involving strongly interacting dark quarks, utilizing the gravitational anomaly of chiral gauge theories. In these models, both the visible and dark baryon asymmetries are generated by the gravitational anomaly induced by the presence of chiral primordial gravitational waves. We provide a concrete model of an SU(2) gauge theory with two massless quarks. In this model, the dark quarks condense and form a dark baryon charge superfluid (DBS), in which the Higgs-mode acts as cold dark matter. We elucidate the essential features of this dark matter scenario and discuss its phenomenological prospects. arXiv:1801.07255v4 [hep-th]

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Section: Introductionmentioning

confidence: 91%

Chiral gravitational waves and baryon superfluid dark matter

Alexander

McDonough

Spergel

2018

J. Cosmol. Astropart. Phys.

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“…In our scenario, the phase transition is triggered by quantum fluctuation during inflation rather than thermal fluctuations and we can make use of the results of [3,32,35,38] to analyze its properties. Calculations based on the stochastic inlfation method [45,46] show that the phase of the string-forming field ψ 1 is fixed when the classical potential force surpasses the effect of stochastic quantum fluctuations [35].…”

Section: Cosmic Strings and Inflation In Supergravitymentioning

confidence: 99%

“…then we can get a relation between the model parameres and z sc by equating (38) and (39) to determine the region of the parameter space where traces of cosmic strings are detectable by future CMB observations without conflicting with the PTA constraints. Figure 3 shows allowed region of the model parameters where the redshift at the onset of the scaling regime has been obtained from an equality…”

Section: Cosmic Strings and Inflation In Supergravitymentioning

confidence: 99%

“…While previous proposals assumed nontrivial interactions between the string-forming Higgs field and the inflaton field [31][32][33] or gravity [3,34], we here point out that the F-term inflation in supergravity can naturally realize a phase transition during inflation thanks to the Hubble induced mass [36], as studied in Refs. [37,38]. To be concrete, we construct a model that generates cosmic stings during chaotic inflation [39] in supergravity [40].…”

Section: Introductionmentioning

confidence: 99%

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Evading the pulsar constraints on the cosmic string tension in supergravity inflation

Kamada

Miyamoto

Yokoyama

2012

J. Cosmol. Astropart. Phys.

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The cosmic string is a useful probe of the early Universe and may give us a clue to physics at high energy scales which particle accelerators cannot reach. Although the most promising tool to observe it is the cosmic microwave background (CMB), the constraint from gravitational waves is becoming so stringent that detecting its signatures in CMB may be impossible. In this paper, we construct a scenario that contains cosmic strings observable in the cosmic microwave background while evading the constraint imposed by the recent pulsar timing data. We argue that cosmic strings with relatively large tension are allowed by diluting loops contributing to the relevant frequency range of the gravitational wave background. We also present a particle physics model to realize such dilution in the context of chaotic inflation in supergravity, where the phase transition occurs during inflation due to the time-dependence of the Hubble induced mass. * Email: kohei.kamada"at"desy.de † Email: miyamoto"at"resceu.s.u-tokyo.ac.jp ‡ Email: yokoyama"at"resceu.s.u-tokyo.ac.jp

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“…The coupling between the phase of the AD field and currents has been used for the realization of spontaneous baryogenesis in Refs [86][87][88]…”

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confidence: 99%

Magnetogenesis from a rotating scalar: à la scalar chiral magnetic effect

Kamada

Shin

2020

J. High Energ. Phys.

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The chiral magnetic effect is a phenomenon that an electric current parallel to the magnetic fields is induced in the presence of the chiral asymmetry in the fermionic system. In this article we point out that the electric current induced by the dynamics of a pseudo scalar field that anomalously couples to electromagnetic fields can be interpreted as a similar effect in the scalar system. Noting that the velocity of the pseudo scalar field, which is the phase of a complex scalar, represents that the system carries a global U(1) number asymmetry, we see that the induced current is proportional to the asymmetry and parallel to the magnetic field, which is the same to the chiral magnetic effect. We discuss that in a mechanism like the Affleck-Dine mechanism an asymmetry carried by the Affleck-Dine field can induce the electric current and give rise to the instability in the (electro)magnetic field if it is unbroken by the expectation value of the Affleck-Dine field.Cosmological consequences of this mechanism, which is similar to the chiral plasma instability, is investigated.

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Phase transition and monopole production in supergravity inflation

Cited by 6 publications

References 84 publications

Chiral gravitational waves and baryon superfluid dark matter

Chiral gravitational waves and baryon superfluid dark matter

Evading the pulsar constraints on the cosmic string tension in supergravity inflation

Magnetogenesis from a rotating scalar: à la scalar chiral magnetic effect

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