Bubble collision with gravitation

Hwang, Dong-il; Lee, Bum-Hoon; Lee, Wonwoo; Yeom, Dong-han

doi:10.1088/1475-7516/2012/07/003

Cited by 26 publications

(27 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…6 Given this potential, we are able to solve the scalar field equation (4) simultaneously with the Einstein equations (2), using the ansatz given by Eq. (5), in the coordinates (u, v, χ, θ).…”

Section: Gravity-scalar Field Dynamics For Colliding Bubblesmentioning

confidence: 99%

Gravitational Waves from Cosmic Bubble Collisions

Kim

2016

Int. J. Mod. Phys. Conf. Ser.

View full text Add to dashboard Cite

Cosmic bubbles nucleated through the quantum tunneling process would expand and undergo collisions with each other. We focus on collisions of two equal-sized bubbles and compute gravitational waves emitted from the collisions. The mechanism of the collisions can be modeled by means of a real scalar field and its quartic potential. Out of this model we can compute gravitational waves from the collisions by integrating the energy-momentum tensors over the volume of the wave sources; in the quadrupole approximation. Our computational results show that the waveforms are characterized by (i) cusp-like bumps with frequency modulation during the initial-to-intermediate stage of strong collisions and (ii) smooth monochromatic oscillations during the final stage of weak collisions.

show abstract

Section: Gravity-scalar Field Dynamics For Colliding Bubblesmentioning

confidence: 99%

Gravitational Waves from Cosmic Bubble Collisions

Kim

2016

Int. J. Mod. Phys. Conf. Ser.

View full text Add to dashboard Cite

show abstract

“…where R denotes the Ricci scalar, φ the scalar field, and V (φ) the potential of the scalar field [18]. From this system the Einstein equations are derived: …”

Section: Dynamics Of Bubble Collisionsmentioning

confidence: 99%

“…Among others, Hawking et al [15] and Wu [16] studied the mechanism of the collision of two bubbles using the thin-wall approximation. Johnson et al [17] and Hwang et al [18] investigated the collision of two bubbles in full General Relativity via numerical computations. Kosowsky et al [19] computed the GW spectrum resulting from two-bubble collisions in first-order phase transitions in flat spacetime using numerical simulations.…”

Section: Introductionmentioning

confidence: 99%

“…The Einstein equations and a scalar field equation are derived for this system and are solved simultaneously for the full General Relativistic treatment of the collision dynamics. Hwang et al [18] is closely reviewed for this purpose. In Sect.…”

Section: Introductionmentioning

confidence: 99%

“…Part of the computational results from Ref. [18] are recycled here to build the energymomentum tensors. In parallel with the scalar field solutions in Sect.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Gravitational waves from cosmic bubble collisions

Kim

Lee

et al. 2015

Eur. Phys. J. C

Self Cite

View full text Add to dashboard Cite

Cosmic bubbles are nucleated through the quantum tunneling process. After nucleation they would expand and undergo collisions with each other. In this paper, we focus in particular on collisions of two equal-sized bubbles and compute gravitational waves emitted from the collisions. First, we study the mechanism of the collisions by means of a real scalar field and its quartic potential. Then, using this model, we compute gravitational waves from the collisions in a straightforward manner. In the quadrupole approximation, time-domain gravitational waveforms are directly obtained by integrating the energy-momentum tensors over the volume of the wave sources, where the energy-momentum tensors are expressed in terms of the scalar field, the local geometry and the potential. We present gravitational waveforms emitted during (i) the initial-to-intermediate stage of strong collisions and (ii) the final stage of weak collisions: the former is obtained numerically, in full General Relativity and the latter analytically, in the flat spacetime approximation. We gain qualitative insights into the time-domain gravitational waveforms from bubble collisions: during (i), the waveforms show the non-linearity of the collisions, characterized by a modulating frequency and cusp-like bumps, whereas during (ii), the waveforms exhibit the linearity of the collisions, featured by smooth monochromatic oscillations.

show abstract

Moduli destabilization via gravitational collapse

Hwang

Pedro

Yeom

2013

J. High Energ. Phys.

Self Cite

View full text Add to dashboard Cite

Abstract:We examine the interplay between gravitational collapse and moduli stability in the context of black hole formation. We perform numerical simulations of the collapse using the double null formalism and show that the very dense regions one expects to find in the process of black hole formation are able to destabilize the volume modulus. We establish that the effects of the destabilization will be visible to an observer at infinity, opening up a window to a region in spacetime where standard model's couplings and masses can differ significantly from their background values.

show abstract

Bubble collision with gravitation

Cited by 26 publications

References 43 publications

Gravitational Waves from Cosmic Bubble Collisions

Gravitational Waves from Cosmic Bubble Collisions

Gravitational waves from cosmic bubble collisions

Moduli destabilization via gravitational collapse

Contact Info

Product

Resources

About