Dynamical viscosity of nucleating bubbles

Alamoudi, S. M.; Barci, Daniel G.; Boyanovsky, D.; Carvalho, C. A. A. de; Fraga, Eduardo S.; Jorás, S. E.; Takakura, F. I.

doi:10.1103/physrevd.60.125003

Cited by 18 publications

(20 citation statements)

References 79 publications

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“…While this is beyond the scope of the present work, we are pursuing it for future publication. Furthermore, with this information in hand, one could hopefully also bring to bear an analysis of the dynamical viscosity experienced by the moving wall at finite temperature, as suggested by other recent results [28,29].…”

Section: Numerical Resultsmentioning

confidence: 99%

A step beyond the bounce: Bubble dynamics in quantum phase transitions

Bergner

Bettencourt

2003

Phys. Rev. D

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We study the dynamical evolution of a phase interface or bubble in the context of a λφ 4 + gφ 6 scalar quantum field theory. We use a self-consistent mean-field approximation derived from a 2PI effective action to construct an initial value problem for the expectation value of the quantum field and two-point function. We solve the equations of motion numerically in (1+1)-dimensions and compare the results to the purely classical evolution. We find that the quantum fluctuations dress the classical profile, affecting both the early time expansion of the bubble and the behavior upon collision with a neighboring interface.

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Section: Numerical Resultsmentioning

confidence: 99%

A step beyond the bounce: Bubble dynamics in quantum phase transitions

Bergner

Bettencourt

2003

Phys. Rev. D

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“…Following a different approach, Ignatius [21] had also derived κ in the limit of zero fluid velocity to be ≈ 2/(ηR 2 c ) where η is a phenomenological friction parameter (not to be confused with the shear viscosity of the plasma) responsible for the energy transportation between the order parameter and the fluid. Recently, Alamoudi et al [22] have also studied the dynamical viscosity and the growth rate of the nucleating bubble where the viscosity effects arise due to the interaction of the unstable coordinate with the stable fluctuations. They estimate a growth rate which depends on R, ξ and the self coupling…”

Section: Resultsmentioning

confidence: 99%

Dynamical growth of the hadron bubbles during the quark-hadron phase transition

Shukla

Gupta

2000

Phys. Rev. D

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The rate of dynamical growth of the hadron bubbles in a supercooled baryon free quark-gluon plasma, is evaluated by solving the equations of relativistic fluid dynamics in all regions. For a non-viscous plasma, this dynamical growth rate is found to depend only on the range of correlation ξ of order parameter fluctuation, and the radius R of the critical hadron bubble, the two length scales relevant for the description of the critical phenomena. Further, it is shown that the dynamical prefactor acquires an additive component when the medium becomes viscous. Interestingly, under certain reasonable assumption for the velocity of the sound in the medium around the saddle configuration, the viscous and the non-viscous parts of the prefactor are found to be similar to the results obtained by Csernai-Kapusta and Ruggeri-Friedman (for the case of zero viscosity) respectively. 12.38.Mh, 64.60.Qb

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“…27 and references therein͒. However, it was shown 28 that in two dimensions and in the thin wall approximation ͑⌬F→0͒, these quantities can be cast in terms of the macroscopic parameter ⌬F,…”

Section: ͑32͒mentioning

confidence: 99%

Metastable anisotropy orientation of nematic quantum Hall fluids

Barci

Arenas

2008

Phys. Rev. B

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We analyze the experimental observation of metastable anisotropy resistance orientation at half filled quantum Hall fluids by means of a model of a quantum nematic liquid in an explicit symmetry breaking potential. We interpret the observed ``rotation'' of the anisotropy axis as a process of nucleation of nematic domains and compute the nucleation rate within this model. By comparing with experiment, we are able to predict the critical radius of nematic bubbles, $R_c\sim 2.6 \mu m $. Each domain contains about $10^4$ electrons.Comment: 10 pages, 8 figures, final version as will appear in PR

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Dynamical viscosity of nucleating bubbles

Cited by 18 publications

References 79 publications

A step beyond the bounce: Bubble dynamics in quantum phase transitions

A step beyond the bounce: Bubble dynamics in quantum phase transitions

Dynamical growth of the hadron bubbles during the quark-hadron phase transition

Metastable anisotropy orientation of nematic quantum Hall fluids

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