Topological phase transition in a RNA model in the de Gennes regime
We study a simplified model of the RNA molecule proposed by Vernizzi in the regime of strong concentration of positive ions in solution. The model considers a flexible chain of equal bases that can pairwise interact with any other one along the chain while preserving the property of saturation of th...
Guardado en:
Autores principales: | , |
---|---|
Formato: | JOUR |
Lenguaje: | English |
Materias: | |
Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_15393755_v80_n4_p_DellErba |
Aporte de: |
id |
todo:paper_15393755_v80_n4_p_DellErba |
---|---|
record_format |
dspace |
spelling |
todo:paper_15393755_v80_n4_p_DellErba2023-10-03T16:22:30Z Topological phase transition in a RNA model in the de Gennes regime Dell'Erba, M.G. Zemba, G.R. Analytical expressions Complex topology Concentration of Critical temperatures First order Flexible chains Low temperatures Polymer systems RNA molecules Simplified models Temperature regimes Topological phase Two phasis Molecules Nucleic acids RNA Technetium Topology Phase transitions We study a simplified model of the RNA molecule proposed by Vernizzi in the regime of strong concentration of positive ions in solution. The model considers a flexible chain of equal bases that can pairwise interact with any other one along the chain while preserving the property of saturation of the interactions. In the regime considered, we observe the emergence of a critical temperature Tc separating two phases that can be characterized by the topology of the predominant configurations: in the large temperature regime, the dominant configurations of the molecule have very large genera (on the order of the size of the molecule), corresponding to a complex topology, whereas in the opposite regime of low temperatures the dominant configurations are simple and have the topology of a sphere. We determine that this topological phase transition is of first order and provide an analytical expression for Tc. The regime studied for this model exhibits analogies with the dense polymer systems studied by de Gennes. © 2009 The American Physical Society. Fil:Zemba, G.R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR English info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_15393755_v80_n4_p_DellErba |
institution |
Universidad de Buenos Aires |
institution_str |
I-28 |
repository_str |
R-134 |
collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
language |
English |
orig_language_str_mv |
English |
topic |
Analytical expressions Complex topology Concentration of Critical temperatures First order Flexible chains Low temperatures Polymer systems RNA molecules Simplified models Temperature regimes Topological phase Two phasis Molecules Nucleic acids RNA Technetium Topology Phase transitions |
spellingShingle |
Analytical expressions Complex topology Concentration of Critical temperatures First order Flexible chains Low temperatures Polymer systems RNA molecules Simplified models Temperature regimes Topological phase Two phasis Molecules Nucleic acids RNA Technetium Topology Phase transitions Dell'Erba, M.G. Zemba, G.R. Topological phase transition in a RNA model in the de Gennes regime |
topic_facet |
Analytical expressions Complex topology Concentration of Critical temperatures First order Flexible chains Low temperatures Polymer systems RNA molecules Simplified models Temperature regimes Topological phase Two phasis Molecules Nucleic acids RNA Technetium Topology Phase transitions |
description |
We study a simplified model of the RNA molecule proposed by Vernizzi in the regime of strong concentration of positive ions in solution. The model considers a flexible chain of equal bases that can pairwise interact with any other one along the chain while preserving the property of saturation of the interactions. In the regime considered, we observe the emergence of a critical temperature Tc separating two phases that can be characterized by the topology of the predominant configurations: in the large temperature regime, the dominant configurations of the molecule have very large genera (on the order of the size of the molecule), corresponding to a complex topology, whereas in the opposite regime of low temperatures the dominant configurations are simple and have the topology of a sphere. We determine that this topological phase transition is of first order and provide an analytical expression for Tc. The regime studied for this model exhibits analogies with the dense polymer systems studied by de Gennes. © 2009 The American Physical Society. |
format |
JOUR |
author |
Dell'Erba, M.G. Zemba, G.R. |
author_facet |
Dell'Erba, M.G. Zemba, G.R. |
author_sort |
Dell'Erba, M.G. |
title |
Topological phase transition in a RNA model in the de Gennes regime |
title_short |
Topological phase transition in a RNA model in the de Gennes regime |
title_full |
Topological phase transition in a RNA model in the de Gennes regime |
title_fullStr |
Topological phase transition in a RNA model in the de Gennes regime |
title_full_unstemmed |
Topological phase transition in a RNA model in the de Gennes regime |
title_sort |
topological phase transition in a rna model in the de gennes regime |
url |
http://hdl.handle.net/20.500.12110/paper_15393755_v80_n4_p_DellErba |
work_keys_str_mv |
AT dellerbamg topologicalphasetransitioninarnamodelinthedegennesregime AT zembagr topologicalphasetransitioninarnamodelinthedegennesregime |
_version_ |
1782025652525858816 |