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| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Carvalho, C. S. | en |
| dc.contributor.author | Perivolaropoulos, L. | en |
| dc.date.accessioned | 2015-11-24T18:26:35Z | - |
| dc.date.available | 2015-11-24T18:26:35Z | - |
| dc.identifier.issn | 1550-7998 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/15907 | - |
| dc.rights | Default Licence | - |
| dc.subject | cosmic strings | en |
| dc.title | Kink-antikink formation from an oscillation mode by sudden distortion of the evolution potential | en |
| heal.type | journalArticle | - |
| heal.type.en | Journal article | en |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.identifier.primary | Doi 10.1103/Physrevd.79.065032 | - |
| heal.identifier.secondary | <Go to ISI>://000264762500115 | - |
| heal.identifier.secondary | http://prd.aps.org/abstract/PRD/v79/i6/e065032 | - |
| heal.language | en | - |
| heal.access | campus | - |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιών | el |
| heal.publicationDate | 2009 | - |
| heal.abstract | We demonstrate numerically that an oscillation mode in 1+1 dimensions (e.g., a breather or an oscillon) can decay into a kink-antikink pair by a sudden distortion of the evolution potential which occurs within a certain time or space domain. In particular, we consider the transition of a sine-Gordon potential into a Phi(4) potential. The breather field configuration is assumed to initially evolve in a sine-Gordon potential with velocity v and oscillation frequency omega. We then consider two types of numerical experiments: (a) an abrupt transition of the potential to a Phi(4) form at t(0)=0 over the whole 1-dimensional lattice; and (b) the impact of the breather on a region x > x(0)=0 where the potential has the Phi(4) form which is different from the sine-Gordon form valid at x < x(0)=0. We find that in both cases there is a region of parameters (v,omega) such that the breather decays to a kink-antikink pair. This region of parameters for kink-antikink formation is qualitatively similar with the parameter region where the energy of the breather exceeds the energy of the kink-antikink pair in the Phi(4) potential. We demonstrate that the same mechanism for soliton formation is realized when using a Gaussian oscillator (oscillon) instead of a breather. We briefly discuss the implications of our results for realistic experiments as well as their extension to soliton formation in two and three space dimensions. | en |
| heal.journalName | Physical Review D | en |
| heal.journalType | peer reviewed | - |
| heal.fullTextAvailability | TRUE | - |
| Appears in Collections: | Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά) | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| perivolaropoulos-2009-Kink-antikink formation from an oscillation mode by sudden distortion of the evolution potential.pdf | 328.28 kB | Adobe PDF | View/Open |
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