Dynamical boson stars

Liebling, Steven L.; Palenzuela, Carlos

doi:10.1007/s41114-017-0007-y

Cited by 209 publications

(145 citation statements)

References 379 publications

(671 reference statements)

Supporting

Mentioning

142

Contrasting

Order By: Relevance

“…Remarkably, because the scalar field does not share the isometries of the spacetime, it is possible to evade the no-hair theorems when the angular velocity of a Kerr black hole matches the angular parameter m/ω s of a marginal scalar cloud, giving rise to a hairy black hole as reported in [28]. An updated review on boson stars can be found in [29].…”

Section: Introductionmentioning

confidence: 99%

Rotating tensor-multiscalar solitons

2020

View full text Add to dashboard Cite

In the context of a special class of tensor-multi-scalar theories of gravity for which the target-space metric admits an isometry under which the theory is invariant, we present rotating vacuum solutions, namely with no matter fields. These objects behave like nontopological solitons, whose primary stability is due to the conserved charge arising from the global symmetry. We consider theories with two and three scalar fields, different Gauss curvatures and quartic interaction coefficients. As it occurs for boson stars, their angular momentum is quantized.

show abstract

Section: Introductionmentioning

confidence: 99%

Rotating tensor-multiscalar solitons

2020

View full text Add to dashboard Cite

show abstract

“…We are after a practically useful generalization of the WGC and are therefore not satisfied with the possible and fairly obvious statement that all bound states not protected by gauge invariance must decay. 4 For a review on boson stars (updated in 2017) see [29]. A selection of recent work can be found in [30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45] the heaviest elementary state has mass m , no bound state with radius below the scale 1/m set by the Compton wavelength exists.…”

Section: Introductionmentioning

confidence: 99%

A conjecture on the minimal size of bound states

et al. 2020

View full text Add to dashboard Cite

We conjecture that, in a renormalizable effective quantum field theory where the heaviest stable particle has mass m , there are no bound states with radius below 1/m (Bound State Conjecture). We are motivated by the (scalar) Weak Gravity Conjecture, which can be read as a statement forbidding certain bound states. As we discuss, versions for uncharged particles and their generalizations have shortcomings.This leads us to the suggestion that one should only constrain rather than exclude bound objects. In the gravitational case, the resulting conjecture takes the sharp form of forbidding the adiabatic construction of black holes smaller than 1/m . But this minimal bound-state radius remains non-trivial as M P → ∞ , leading us to suspect a feature of QFT rather than a quantum gravity constraint. We find support in a number of examples which we analyze at a parametric level.

show abstract

“…α-particles are not reactive for certain temperature range, even if sufficient energy for fusion reactions as much as 10 MeV per nucleon is provided. Meanwhile the soliton star is a long-standing concept whose existence is proposed in association with the relativistic gravitational force field [27] (for a textbook of bosonic stars, soliton stars and the related topics, see [28]). The energy of such proposed soliton stars (comparable to the energy of black holes) is much higher than the present low-temperature solitonic core.…”

Section: Calculations and Discussionmentioning

confidence: 99%

Conditional recovery of time-reversal symmetry in many nucleus systems

Iwata

Stevenson

2019

New J. Phys.

View full text Add to dashboard Cite

The propagation of non-topological solitons in many-nucleus systems is studied based on timedependent density functional calculations, focusing on mass and energy dependence. The dispersive property and the nonlinearity of the system, which are inherently included in the nuclear density functional, are essential factors to form a non-topological soliton. On the other hand, soliton propagation is prevented by charge equilibration, and competition can appear between soliton formation and disruption. In this article, based on the energy-dependence of the two competitive factors, the concept of conditional recovery of time-reversal symmetry is proposed in many-nucleus systems. It clarifies the possibility of preserving the nuclear medium inside natural or artificial nuclear reactors, at a suitable temperature. From an astrophysical point of view, the existence of the lowtemperature solitonic core of compact stars is suggested.

show abstract

Dynamical boson stars

Cited by 209 publications

References 379 publications

Rotating tensor-multiscalar solitons

Rotating tensor-multiscalar solitons

A conjecture on the minimal size of bound states

Conditional recovery of time-reversal symmetry in many nucleus systems

Contact Info

Product

Resources

About