RT Journal Article
T1 Spectral walls in soliton collisions
A1 Adam, Christoph
A1 Oles, K.
A1 Romanczukiewicz, T.
A1 Wereszczynski, Andrzej
AB During defect-antidefect scattering, bound modes frequently disappear into the continuous spectrum before the defects themselves collide. This leads to a structural, nonperturbative change in the spectrum of small excitations. Sometimes the effect can be seen as a hard wall from which the defect can bounce off. We show the existence of these spectral walls and study their properties in the ϕ(4) model with Bogomol’nyi-Prasad-Sommerfield preserving impurity, where the spectral wall phenomenon can be isolated because the static force between the antikink and the impurity vanishes. We conclude that such spectral walls should surround all solitons possessing internal modes
PB American Physical Society
SN 0031-9007
YR 2019
FD 2019
LK http://hdl.handle.net/10347/21574
UL http://hdl.handle.net/10347/21574
LA eng
NO Adam, C., Oles, K., Romanczukiewicz, T., & Wereszczynski, A. (2019). Spectral walls in soliton collisions. Physical Review Letters, 122(24). doi: 10.1103/physrevlett.122.241601
NO The authors acknowledge financial support from theMinistry of Education, Culture, and Sports, Spain (GrantNo. FPA2017-83814-P), the Xunta de Galicia (GrantNo. INCITE09.296.035PR and Conselleria deEducacion), the Spanish Consolider-Ingenio ProgrammeCPAN (CSD2007-00042), Maria de Maetzu Unit ofExcellence MDM-2016-0692, and FEDER
DS Minerva
RD 23 abr 2026