Local spinfoam expansion in loop quantum cosmology

Local spinfoam expansion in loop quantum cosmology

The quantum dynamics of the flat Friedmann-Lemaitre-Robertson-Walker and Bianchi I models defined by loop quantum cosmology have recently been translated into a spinfoam-like formalism. The construction is facilitated by the presence of a massless scalar field which is used as an internal clock. The...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Classical and quantum gravity 2011-01, Vol.28 (2), p.025003
Hauptverfasser: Henderson, Adam, Rovelli, Carlo, Vidotto, Francesca, Wilson-Ewing, Edward
Format: Artikel
Sprache:eng
Schlagworte:
Exact sciences and technology
General relativity and gravitation
General Relativity and Quantum Cosmology
Physics
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page
container_issue 2
container_start_page 025003
container_title Classical and quantum gravity
container_volume 28
creator Henderson, Adam
Rovelli, Carlo
Vidotto, Francesca
Wilson-Ewing, Edward
description The quantum dynamics of the flat Friedmann-Lemaitre-Robertson-Walker and Bianchi I models defined by loop quantum cosmology have recently been translated into a spinfoam-like formalism. The construction is facilitated by the presence of a massless scalar field which is used as an internal clock. The implicit integration over the matter variable leads to a nonlocal spinfoam amplitude. In this paper we consider a vacuum Bianchi I universe and show that by choosing an appropriate regulator a spinfoam expansion can be obtained without selecting a clock variable and that the resulting spinfoam amplitude is local.
doi_str_mv 10.1088/0264-9381/28/2/025003
format Article
fullrecord <record><control><sourceid>hal_cross</sourceid><recordid>TN_cdi_hal_primary_oai_HAL_hal_00524923v1</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>oai_HAL_hal_00524923v1</sourcerecordid><originalsourceid>FETCH-LOGICAL-c395t-113e950fa9073103626a3368a325d7a6469a95ca6787617e06c8a25ed6f997a93</originalsourceid><addsrcrecordid>eNp9kE1LxEAMhgdRcF39CUIvHgRrM5PO13FZ1BUKXvQ8hG6rlbZTO7vi_ntbKr0onkKS5w3hYeySwy0HYxIQKo0tGp4Ik4ihlQB4xBYcFY8VGnHMFjNzys5CeAfg3HCxYCLzOdVR6Kq29NRExVdHbah8G1VtVHvfRR97anf7Jsp9aHztXw_n7KSkOhQXP3XJXu7vntebOHt6eFyvsjhHK3cx51hYCSVZ0MgBlVCEqAyhkFtNKlWWrMxJaaMV1wWo3JCQxVaV1mqyuGTX0903ql3XVw31B-epcptV5sYZgBSpFfjJB1ZObN77EPqinAMc3CjJjQLcKMAJ44SbJA25qynXURg8lD21eRXmsECdapRy4G4mrvLdvP3zpOu25YDDb_z_T74B5nCACA</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>Local spinfoam expansion in loop quantum cosmology</title><source>IOP Publishing Journals</source><source>Institute of Physics (IOP) Journals - HEAL-Link</source><creator>Henderson, Adam ; Rovelli, Carlo ; Vidotto, Francesca ; Wilson-Ewing, Edward</creator><creatorcontrib>Henderson, Adam ; Rovelli, Carlo ; Vidotto, Francesca ; Wilson-Ewing, Edward</creatorcontrib><description>The quantum dynamics of the flat Friedmann-Lemaitre-Robertson-Walker and Bianchi I models defined by loop quantum cosmology have recently been translated into a spinfoam-like formalism. The construction is facilitated by the presence of a massless scalar field which is used as an internal clock. The implicit integration over the matter variable leads to a nonlocal spinfoam amplitude. In this paper we consider a vacuum Bianchi I universe and show that by choosing an appropriate regulator a spinfoam expansion can be obtained without selecting a clock variable and that the resulting spinfoam amplitude is local.</description><identifier>ISSN: 0264-9381</identifier><identifier>EISSN: 1361-6382</identifier><identifier>DOI: 10.1088/0264-9381/28/2/025003</identifier><identifier>CODEN: CQGRDG</identifier><language>eng</language><publisher>Bristol: IOP Publishing</publisher><subject>Exact sciences and technology ; General relativity and gravitation ; General Relativity and Quantum Cosmology ; Physics</subject><ispartof>Classical and quantum gravity, 2011-01, Vol.28 (2), p.025003</ispartof><rights>2015 INIST-CNRS</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c395t-113e950fa9073103626a3368a325d7a6469a95ca6787617e06c8a25ed6f997a93</citedby><cites>FETCH-LOGICAL-c395t-113e950fa9073103626a3368a325d7a6469a95ca6787617e06c8a25ed6f997a93</cites><orcidid>0000-0003-1724-9737</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://iopscience.iop.org/article/10.1088/0264-9381/28/2/025003/pdf$$EPDF$$P50$$Giop$$H</linktopdf><link.rule.ids>230,314,776,780,881,27901,27902,53805,53885</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&amp;idt=23747355$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://hal.science/hal-00524923$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Henderson, Adam</creatorcontrib><creatorcontrib>Rovelli, Carlo</creatorcontrib><creatorcontrib>Vidotto, Francesca</creatorcontrib><creatorcontrib>Wilson-Ewing, Edward</creatorcontrib><title>Local spinfoam expansion in loop quantum cosmology</title><title>Classical and quantum gravity</title><description>The quantum dynamics of the flat Friedmann-Lemaitre-Robertson-Walker and Bianchi I models defined by loop quantum cosmology have recently been translated into a spinfoam-like formalism. The construction is facilitated by the presence of a massless scalar field which is used as an internal clock. The implicit integration over the matter variable leads to a nonlocal spinfoam amplitude. In this paper we consider a vacuum Bianchi I universe and show that by choosing an appropriate regulator a spinfoam expansion can be obtained without selecting a clock variable and that the resulting spinfoam amplitude is local.</description><subject>Exact sciences and technology</subject><subject>General relativity and gravitation</subject><subject>General Relativity and Quantum Cosmology</subject><subject>Physics</subject><issn>0264-9381</issn><issn>1361-6382</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNp9kE1LxEAMhgdRcF39CUIvHgRrM5PO13FZ1BUKXvQ8hG6rlbZTO7vi_ntbKr0onkKS5w3hYeySwy0HYxIQKo0tGp4Ik4ihlQB4xBYcFY8VGnHMFjNzys5CeAfg3HCxYCLzOdVR6Kq29NRExVdHbah8G1VtVHvfRR97anf7Jsp9aHztXw_n7KSkOhQXP3XJXu7vntebOHt6eFyvsjhHK3cx51hYCSVZ0MgBlVCEqAyhkFtNKlWWrMxJaaMV1wWo3JCQxVaV1mqyuGTX0903ql3XVw31B-epcptV5sYZgBSpFfjJB1ZObN77EPqinAMc3CjJjQLcKMAJ44SbJA25qynXURg8lD21eRXmsECdapRy4G4mrvLdvP3zpOu25YDDb_z_T74B5nCACA</recordid><startdate>20110121</startdate><enddate>20110121</enddate><creator>Henderson, Adam</creator><creator>Rovelli, Carlo</creator><creator>Vidotto, Francesca</creator><creator>Wilson-Ewing, Edward</creator><general>IOP Publishing</general><general>Institute of Physics</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>1XC</scope><orcidid>https://orcid.org/0000-0003-1724-9737</orcidid></search><sort><creationdate>20110121</creationdate><title>Local spinfoam expansion in loop quantum cosmology</title><author>Henderson, Adam ; Rovelli, Carlo ; Vidotto, Francesca ; Wilson-Ewing, Edward</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c395t-113e950fa9073103626a3368a325d7a6469a95ca6787617e06c8a25ed6f997a93</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Exact sciences and technology</topic><topic>General relativity and gravitation</topic><topic>General Relativity and Quantum Cosmology</topic><topic>Physics</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Henderson, Adam</creatorcontrib><creatorcontrib>Rovelli, Carlo</creatorcontrib><creatorcontrib>Vidotto, Francesca</creatorcontrib><creatorcontrib>Wilson-Ewing, Edward</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Hyper Article en Ligne (HAL)</collection><jtitle>Classical and quantum gravity</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Henderson, Adam</au><au>Rovelli, Carlo</au><au>Vidotto, Francesca</au><au>Wilson-Ewing, Edward</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Local spinfoam expansion in loop quantum cosmology</atitle><jtitle>Classical and quantum gravity</jtitle><date>2011-01-21</date><risdate>2011</risdate><volume>28</volume><issue>2</issue><spage>025003</spage><pages>025003-</pages><issn>0264-9381</issn><eissn>1361-6382</eissn><coden>CQGRDG</coden><abstract>The quantum dynamics of the flat Friedmann-Lemaitre-Robertson-Walker and Bianchi I models defined by loop quantum cosmology have recently been translated into a spinfoam-like formalism. The construction is facilitated by the presence of a massless scalar field which is used as an internal clock. The implicit integration over the matter variable leads to a nonlocal spinfoam amplitude. In this paper we consider a vacuum Bianchi I universe and show that by choosing an appropriate regulator a spinfoam expansion can be obtained without selecting a clock variable and that the resulting spinfoam amplitude is local.</abstract><cop>Bristol</cop><pub>IOP Publishing</pub><doi>10.1088/0264-9381/28/2/025003</doi><orcidid>https://orcid.org/0000-0003-1724-9737</orcidid></addata></record>
fulltext fulltext
identifier ISSN: 0264-9381
ispartof Classical and quantum gravity, 2011-01, Vol.28 (2), p.025003
issn 0264-9381
1361-6382
language eng
recordid cdi_hal_primary_oai_HAL_hal_00524923v1
source IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link
subjects Exact sciences and technology
General relativity and gravitation
General Relativity and Quantum Cosmology
Physics
title Local spinfoam expansion in loop quantum cosmology
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-08T00%3A43%3A49IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-hal_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Local%20spinfoam%20expansion%20in%20loop%20quantum%20cosmology&rft.jtitle=Classical%20and%20quantum%20gravity&rft.au=Henderson,%20Adam&rft.date=2011-01-21&rft.volume=28&rft.issue=2&rft.spage=025003&rft.pages=025003-&rft.issn=0264-9381&rft.eissn=1361-6382&rft.coden=CQGRDG&rft_id=info:doi/10.1088/0264-9381/28/2/025003&rft_dat=%3Chal_cross%3Eoai_HAL_hal_00524923v1%3C/hal_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true