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Title: Successive phase transitions and kink solutions in Φ⁸, Φ¹⁰, and Φ¹² field theories

Journal Article · · Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
 [1];  [2];  [2]
  1. Indian Institute of Science Education and Research, Pune (India)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

We obtain exact solutions for kinks in Φ8, Φ10, and Φ12 field theories with degenerate minima, which can describe a second-order phase transition followed by a first-order one, a succession of two first-order phase transitions and a second-order phase transition followed by two first-order phase transitions, respectively. Such phase transitions are known to occur in ferroelastic and ferroelectric crystals and in meson physics. In particular, we find that the higher-order field theories have kink solutions with algebraically decaying tails and also asymmetric cases with mixed exponential-algebraic tail decay, unlike the lower-order Φ4 and Φ6 theories. Additionally, we construct distinct kinks with equal energies in all three field theories considered, and we show the coexistence of up to three distinct kinks (for a Φ12 potential with six degenerate minima). We also summarize phonon dispersion relations for these systems, showing that the higher-order field theories have specific cases in which only nonlinear phonons are allowed. For the Φ10 field theory, which is a quasiexactly solvable model akin to Φ6, we are also able to obtain three analytical solutions for the classical free energy as well as the probability distribution function in the thermodynamic limit

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1200676
Alternate ID(s):
OSTI ID: 1180392
Report Number(s):
LA-UR-14-21202; PLEEE8
Journal Information:
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics, Vol. 90, Issue 2; ISSN 1539-3755
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 59 works
Citation information provided by
Web of Science

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Cited By (12)

The Role of the Massless Phantom Term in the Stability of a Non-Topological Soliton Solution journal April 2019
Zero rest mass soliton solutions journal December 2019
Forces between kinks and antikinks with long-range tails journal January 2019
Family of potentials with power law kink tails journal August 2019
Analytical study of kinklike structures with polynomial tails journal May 2018
Kink-Kink and Kink-Antikink Interactions with Long-Range Tails journal May 2019
Extreme values of elastic strain and energy in sine-Gordon multi-kink collisions journal January 2018
Scattering of the double sine-Gordon kinks journal April 2018
Scattering of kinks of the sinh-deformed $$\varphi ^4$$ φ 4 model journal April 2018
Novel connection between lump-like structures and quantum mechanics journal July 2018
Scattering of the double sine-Gordon kinks text January 2017
Forces between Kinks and Antikinks with Long-range Tails text January 2018

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