Valleys in string foam suppress quantum coherence

We exhibit string contributions to the $\nd{S}$ matrix relating in- and out- state density matrices that do not factorize as a product of $S$ and $S^\dagger$ matrices. They are associated with valley trajectories between topological defects on the string world sheet, that appear as quantum fluctuati...

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Detalles Bibliográficos
Autores principales: Ellis, John R., Mavromatos, N.E., Nanopoulos, Dimitri V.
Lenguaje:eng
Publicado: 1995
Materias:
General Theoretical Physics
Acceso en línea:https://dx.doi.org/10.1142/S0217732395000466
http://cds.cern.ch/record/249515
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author Ellis, John R.
Mavromatos, N.E.
Nanopoulos, Dimitri V.
author_facet Ellis, John R.
Mavromatos, N.E.
Nanopoulos, Dimitri V.
author_sort Ellis, John R.
collection CERN
description We exhibit string contributions to the $\nd{S}$ matrix relating in- and out- state density matrices that do not factorize as a product of $S$ and $S^\dagger$ matrices. They are associated with valley trajectories between topological defects on the string world sheet, that appear as quantum fluctuations in the space-time foam. Through their ultraviolet cut-off dependences these valleys cause non-Hamiltonian time evolution and suppress off-diagonal entries in the density matrix at large times.
id cern-249515
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1995
record_format invenio
spelling cern-2495152023-03-14T20:46:27Zdoi:10.1142/S0217732395000466http://cds.cern.ch/record/249515engEllis, John R.Mavromatos, N.E.Nanopoulos, Dimitri V.Valleys in string foam suppress quantum coherenceGeneral Theoretical PhysicsWe exhibit string contributions to the $\nd{S}$ matrix relating in- and out- state density matrices that do not factorize as a product of $S$ and $S^\dagger$ matrices. They are associated with valley trajectories between topological defects on the string world sheet, that appear as quantum fluctuations in the space-time foam. Through their ultraviolet cut-off dependences these valleys cause non-Hamiltonian time evolution and suppress off-diagonal entries in the density matrix at large times.We exhibit string contributions to the $\nd{S}$ matrix relating in- and out- state density matrices that do not factorize as a product of $S$ and $S~\dagger$ matrices. They are associated with valley trajectories between topological defects on the string world sheet, that appear as quantum fluctuations in the space-time foam. Through their ultraviolet cut-off dependences these valleys cause non-Hamiltonian time evolution and suppress off-diagonal entries in the density matrix at large times.hep-th/9305116ENSLAPP-A-428-93CERN-TH-6896-93ACT-9-93CTP-TAMU-29-93ACT-1993-9CERN-TH-6896-93CTP-TAMU-93-29ENSLAPP-A-428oai:cds.cern.ch:2495151995
spellingShingle General Theoretical Physics
Ellis, John R.
Mavromatos, N.E.
Nanopoulos, Dimitri V.
Valleys in string foam suppress quantum coherence
title Valleys in string foam suppress quantum coherence
title_full Valleys in string foam suppress quantum coherence
title_fullStr Valleys in string foam suppress quantum coherence
title_full_unstemmed Valleys in string foam suppress quantum coherence
title_short Valleys in string foam suppress quantum coherence
title_sort valleys in string foam suppress quantum coherence
topic General Theoretical Physics
url https://dx.doi.org/10.1142/S0217732395000466
http://cds.cern.ch/record/249515
work_keys_str_mv AT ellisjohnr valleysinstringfoamsuppressquantumcoherence
AT mavromatosne valleysinstringfoamsuppressquantumcoherence
AT nanopoulosdimitriv valleysinstringfoamsuppressquantumcoherence

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