<i>Q</i>-balls, -shells of a nonlinear sigma model with finite cosmological constants

Yanai, Shota

doi:10.1088/1742-6596/1194/1/012114

Cited by 6 publications

(5 citation statements)

References 4 publications

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“…M and µ have dimensions of (length) −1 and (length) −2 , respectively. Taking into account coupling with gravity one gets that the model has several boson-star and boson-shell solutions [11][12][13][14]. Among others the shell solutions are particularly interesting because they can harbor a localized body inside.…”

Section: Jhep09(2021)084mentioning

confidence: 99%

Compact Q-balls and Q-shells in a multi-component ℂPN model

Klimas

Kubaski

Sawado

et al. 2021

J. High Energ. Phys.

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Coupled multi-component ℂPN models with V-shaped potentials are analyzed. It is shown that the model has solutions being combinations of compact Q-balls and Q-shells. The compact nature of solutions permits the existence of novel harbor-type solutions having the form of Q-balls sheltered by Q-shells. The relation between the energy E and Noether charge Q is discussed both analytically and numerically. The energy of the solutions behaves as E ∼ |Q|α, α < 1, i.e., as for the standard Q-ball. Furthermore, the ratio E/Q for various configurations in the multi-component model suggests that the solutions are at least classically stable.

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Section: Jhep09(2021)084mentioning

confidence: 99%

Compact Q-balls and Q-shells in a multi-component ℂPN model

Klimas

Kubaski

Sawado

et al. 2021

J. High Energ. Phys.

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“…In [13][14][15], we described formalism of the CP N model in flat space-time and also the model of gravitating Q-balls and -shells in detail. Here, we briefly review the formalism.…”

Section: The Modelmentioning

confidence: 99%

“…In last few years we made some efforts in the study of compact boson stars corresponding to the model (1) [13][14][15]. The boson stars are the gravitating objects of such Q-balls.…”

Section: Introductionmentioning

confidence: 99%

Compact, charged boson stars and shells in the CPN gravitating nonlinear sigma model

Sawado

Yanai

2020

Phys. Rev. D

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Phase diagrams of the boson stars and shells of the U (1) gauged CP N nonlinear sigma model are studied. The solutions of the model exhibit both the ball and the shell shaped charge density depending on N . There appear four independent regions of the solutions which are essentially caused from coexistence of the electromagnetism and the gravity. We examine several phase diagrams of the boson stars and the shells and discuss what and how the regions are emerged. A coupling with gravity allows for harboring of the charged black holes for the Q-shell solutions. Some solutions are strongly affected by the presence of the black holes and they allow to be smoothly connected. As a result, the regions are integrated by the harboring black holes.

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“…In the last few years, we made some efforts in the study of compact Q-balls in the nonlinear sigma model on a target space CP N , and also the boson stars corresponding to the model [18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Nodal compact $Q$-ball/$Q$-shell in the $\mathbb{C}P^N$ nonlinear sigma model

Klimas,

Sawado,

Yanai

2022

Preprint

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Nodal, excited compactons in the CP N models with V-shaped potentials are analyzed.It is shown that the solutions exist as compact Q-balls and Q-shells. The solutions have a discontinuity in the second derivative associated with the character of the potential, however, their energy and charge densities are both continuous. The excited Q-balls and Q-shells are analyzed as electrically neutral and electrically charged objects.

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Q-balls, -shells of a nonlinear sigma model with finite cosmological constants

Cited by 6 publications

References 4 publications

Compact Q-balls and Q-shells in a multi-component ℂPN model

Compact Q-balls and Q-shells in a multi-component ℂPN model

Compact, charged boson stars and shells in the CPN gravitating nonlinear sigma model

Nodal compact $Q$-ball/$Q$-shell in the $\mathbb{C}P^N$ nonlinear sigma model

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