scholarly journals Suppression of spinodal instability by disorder in an athermal system

2021 ◽  
Vol 104 (14) ◽  
Author(s):  
Tapas Bar ◽  
Arup Ghosh ◽  
Anurag Banerjee
Keyword(s):  
Spinodal Instability

scholarly journals Spinodal instability growth in new stochastic approaches

2015 ◽  
Vol 88 ◽  
pp. 00003 ◽  
Author(s):  
P. Napolitani ◽  
M. Colonna ◽  
V. de la Mota
Keyword(s):  
Instability Growth ◽  
Spinodal Instability

Spinodal instability and pattern formation in thin liquid films confined between two plates

2006 ◽  
Vol 296 (1) ◽  
pp. 220-232 ◽  
Author(s):  
Ruhi Verma ◽  
Ashutosh Sharma ◽  
Indrani Banerjee ◽  
Kajari Kargupta
Keyword(s):  
Pattern Formation ◽  
Liquid Films ◽  
Thin Liquid Films ◽  
Spinodal Instability

scholarly journals Goldstone excitations from spinodal instability

2002 ◽  
Vol 66 (2) ◽  
Author(s):  
Sz. Borsányi ◽  
A. Patkós ◽  
D. Sexty
Keyword(s):  
Spinodal Instability

scholarly journals Holographic approach of the spinodal instability to criticality

2021 ◽  
Vol 2021 (8) ◽  
Author(s):  
Maximilian Attems
Keyword(s):  
Surface Tension ◽  
Critical Point ◽  
Single Phase ◽  
Transverse Pressure ◽  
First Order Phase Transition ◽  
Holographic Approach ◽  
Spinodal Instability ◽  
First Order Phase ◽  
Gauge Gravity ◽  
Gravity Duality

Abstract A smoking gun signature for a first-order phase transition with negative speed of sound squared $$ {c}_s^2 $$ c s 2 is the occurrence of a spinodal instability. In the gauge/gravity duality it corresponds to a Gregory-Laflamme type instability, which can be numerically simulated as the evolution of unstable planar black branes. Making use of holography its dynamics is studied far from and near a critical point with the following results. Near a critical point the interface between cold and hot stable phases, given by its width and surface tension, is found to feature a wider phase separation and a smaller surface tension. Far away from a critical point the formation time of the spinodal instability is reduced. Across softer and harder phase transitions, it is demonstrated that mergers of equilibrated peaks and unstable plateaux lead to the preferred final single phase separated solution. Finally, a new atypical setup with dissipation of a peak into a plateau is discovered. In order to distinguish the inhomogeneous states I propose a new criterium based on the maximum of the transverse pressure at the interface which encodes phase-mixed peaks versus fully phase separated plateaux.

scholarly journals Non-equilibrium dynamics of a scalar field with quantum backreaction

2021 ◽  
Vol 2021 (12) ◽  
Author(s):  
Kimmo Kainulainen ◽  
Olli Koskivaara
Keyword(s):  
Scalar Field ◽  
Effective Potential ◽  
Finite Temperature ◽  
Equations Of Motion ◽  
Dynamical Evolution ◽  
Physical Parameters ◽  
Equilibrium System ◽  
The One ◽  
Spinodal Instability ◽  
Non Equilibrium

Abstract We study the dynamical evolution of coupled one- and two-point functions of a scalar field in the 2PI framework at the Hartree approximation, including backreaction from out-of-equilibrium modes. We renormalize the 2PI equations of motion in an on-shell scheme in terms of physical parameters. We present the Hartree-resummed renormalized effective potential at finite temperature and critically discuss the role of the effective potential in a non-equilibrium system. We follow the decay and thermalization of a scalar field from an initial cold state with all energy stored in the potential, into a fully thermalized system with a finite temperature. We identify the non-perturbative processes of parametric resonance and spinodal instability taking place during the reheating stage. In particular we study the unstable modes in the region where the vacuum 1PI effective action becomes complex and show that such spinodal modes can have a dramatic effect on the evolution of the one-point function. Our methods can be easily adapted to simulate reheating at the end of inflation.

scholarly journals Spinodal instability in the quark-gluon plasma

2004 ◽  
Vol 34 (1a) ◽  
pp. 307-309 ◽  
Author(s):  
C. E. Aguiar ◽  
E. S. Fraga ◽  
T. Kodama
Keyword(s):  
Quark Gluon Plasma ◽  
Gluon Plasma ◽  
Spinodal Instability
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