Generalized Chaplygin gas model: cosmological consequences and statefinder diagnosis
The generalized Chaplygin gas (GCG) model in spatially flat universe is investigated. The cosmological consequences led by GCG model including the evolution of EoS parameter, deceleration parameter and dimensionless Hubble parameter are calculated. We show that the GCG model behaves as a general qui...
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| Veröffentlicht in: | Astrophysics and space science 2011-07, Vol.334 (1), p.193-201 |
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| creator | Malekjani, M. Khodam-Mohammadi, A. Nazari-pooya, N. |
| description | The generalized Chaplygin gas (GCG) model in spatially flat universe is investigated. The cosmological consequences led by GCG model including the evolution of EoS parameter, deceleration parameter and dimensionless Hubble parameter are calculated. We show that the GCG model behaves as a general quintessence model. The GCG model can also represent the pressureless CDM model at the early time and cosmological constant model at the late time. The dependency of transition from decelerated expansion to accelerated expansion on the parameters of model is investigated. The statefinder parameters
r
and
s
in this model are derived and the evolutionary trajectories in
s
–
r
plane are plotted. Finally, based on current observational data, we plot the evolutionary trajectories in
s
–
r
and
q
–
r
planes for best fit values of the parameters of GCG model. It has been shown that although, there are similarities between GCG model and other forms of Chaplygin gas in statefinder plane, but the distance of this model from the ΛCDM fixed point in
s
–
r
diagram is shorter compare with standard Chaplygin gas model. |
| doi_str_mv | 10.1007/s10509-011-0671-4 |
| format | Article |
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r
and
s
in this model are derived and the evolutionary trajectories in
s
–
r
plane are plotted. Finally, based on current observational data, we plot the evolutionary trajectories in
s
–
r
and
q
–
r
planes for best fit values of the parameters of GCG model. It has been shown that although, there are similarities between GCG model and other forms of Chaplygin gas in statefinder plane, but the distance of this model from the ΛCDM fixed point in
s
–
r
diagram is shorter compare with standard Chaplygin gas model.</description><identifier>ISSN: 0004-640X</identifier><identifier>EISSN: 1572-946X</identifier><identifier>DOI: 10.1007/s10509-011-0671-4</identifier><language>eng</language><publisher>Dordrecht: Springer Netherlands</publisher><subject>Astrobiology ; Astronomy ; Astrophysics ; Astrophysics and Astroparticles ; Chaplygin gas ; Cosmology ; Deceleration ; Evolution ; Evolutionary ; Gases ; Mathematical models ; Observations and Techniques ; Original Article ; Physics ; Physics and Astronomy ; Planes ; Space Exploration and Astronautics ; Space Sciences (including Extraterrestrial Physics ; Trajectories ; Universe</subject><ispartof>Astrophysics and space science, 2011-07, Vol.334 (1), p.193-201</ispartof><rights>Springer Science+Business Media B.V. 2011</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c380t-1b4879954fad45791dc690177c9a074a4ce78b03738cb63c2829ee573531ccdb3</citedby><cites>FETCH-LOGICAL-c380t-1b4879954fad45791dc690177c9a074a4ce78b03738cb63c2829ee573531ccdb3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10509-011-0671-4$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10509-011-0671-4$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids></links><search><creatorcontrib>Malekjani, M.</creatorcontrib><creatorcontrib>Khodam-Mohammadi, A.</creatorcontrib><creatorcontrib>Nazari-pooya, N.</creatorcontrib><title>Generalized Chaplygin gas model: cosmological consequences and statefinder diagnosis</title><title>Astrophysics and space science</title><addtitle>Astrophys Space Sci</addtitle><description>The generalized Chaplygin gas (GCG) model in spatially flat universe is investigated. The cosmological consequences led by GCG model including the evolution of EoS parameter, deceleration parameter and dimensionless Hubble parameter are calculated. We show that the GCG model behaves as a general quintessence model. The GCG model can also represent the pressureless CDM model at the early time and cosmological constant model at the late time. The dependency of transition from decelerated expansion to accelerated expansion on the parameters of model is investigated. The statefinder parameters
r
and
s
in this model are derived and the evolutionary trajectories in
s
–
r
plane are plotted. Finally, based on current observational data, we plot the evolutionary trajectories in
s
–
r
and
q
–
r
planes for best fit values of the parameters of GCG model. It has been shown that although, there are similarities between GCG model and other forms of Chaplygin gas in statefinder plane, but the distance of this model from the ΛCDM fixed point in
s
–
r
diagram is shorter compare with standard Chaplygin gas model.</description><subject>Astrobiology</subject><subject>Astronomy</subject><subject>Astrophysics</subject><subject>Astrophysics and Astroparticles</subject><subject>Chaplygin gas</subject><subject>Cosmology</subject><subject>Deceleration</subject><subject>Evolution</subject><subject>Evolutionary</subject><subject>Gases</subject><subject>Mathematical models</subject><subject>Observations and Techniques</subject><subject>Original Article</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Planes</subject><subject>Space Exploration and Astronautics</subject><subject>Space Sciences (including Extraterrestrial Physics</subject><subject>Trajectories</subject><subject>Universe</subject><issn>0004-640X</issn><issn>1572-946X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNp9kUtLLDEQhYMoOFf9Ae4aN95Na6Xz6ri7DL5gwI2Cu5BJ17QtPcmYmlnorzfDCIJwXRRFwXcOVXUYO-VwwQHMJXFQYGvgvAZteC332IQr09RW6ud9NgEAWWsJz4fsD9FrGa22ZsIebzFi9uPwgV01ffGr8b0fYtV7qpapw_GqComWaUz9EPxYhkj4tsEYkCofu4rWfo2LIXaYq27wfUw00DE7WPiR8OSrH7Gnm-vH6V09e7i9n_6b1UG0sK75XLbGWiUXvpPKWN4FbYEbE6wHI70MaNo5CCPaMNciNG1jEZURSvAQurk4Yuc731VOZSlau-VAAcfRR0wbcq3RjWxLFfLvryQvP1MAQtuCnv1AX9Mmx3JH8QMllW5FgfgOCjkRZVy4VR6WPr87Dm4biNsF4kogbhuI2-7Q7DRU2Nhj_jb-v-gT13ONUQ</recordid><startdate>20110701</startdate><enddate>20110701</enddate><creator>Malekjani, M.</creator><creator>Khodam-Mohammadi, A.</creator><creator>Nazari-pooya, N.</creator><general>Springer Netherlands</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7TG</scope><scope>7XB</scope><scope>88I</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>GNUQQ</scope><scope>H8D</scope><scope>HCIFZ</scope><scope>KL.</scope><scope>L7M</scope><scope>M2P</scope><scope>P5Z</scope><scope>P62</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>Q9U</scope></search><sort><creationdate>20110701</creationdate><title>Generalized Chaplygin gas model: cosmological consequences and statefinder diagnosis</title><author>Malekjani, M. ; Khodam-Mohammadi, A. ; Nazari-pooya, N.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c380t-1b4879954fad45791dc690177c9a074a4ce78b03738cb63c2829ee573531ccdb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Astrobiology</topic><topic>Astronomy</topic><topic>Astrophysics</topic><topic>Astrophysics and Astroparticles</topic><topic>Chaplygin gas</topic><topic>Cosmology</topic><topic>Deceleration</topic><topic>Evolution</topic><topic>Evolutionary</topic><topic>Gases</topic><topic>Mathematical models</topic><topic>Observations and Techniques</topic><topic>Original Article</topic><topic>Physics</topic><topic>Physics and Astronomy</topic><topic>Planes</topic><topic>Space Exploration and Astronautics</topic><topic>Space Sciences (including Extraterrestrial Physics</topic><topic>Trajectories</topic><topic>Universe</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Malekjani, M.</creatorcontrib><creatorcontrib>Khodam-Mohammadi, A.</creatorcontrib><creatorcontrib>Nazari-pooya, N.</creatorcontrib><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Science Database (Alumni Edition)</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>Advanced Technologies & Aerospace Collection</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>ProQuest Central Student</collection><collection>Aerospace Database</collection><collection>SciTech Premium Collection</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Science Database</collection><collection>Advanced Technologies & Aerospace Database</collection><collection>ProQuest Advanced Technologies & Aerospace Collection</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central Basic</collection><jtitle>Astrophysics and space science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Malekjani, M.</au><au>Khodam-Mohammadi, A.</au><au>Nazari-pooya, N.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Generalized Chaplygin gas model: cosmological consequences and statefinder diagnosis</atitle><jtitle>Astrophysics and space science</jtitle><stitle>Astrophys Space Sci</stitle><date>2011-07-01</date><risdate>2011</risdate><volume>334</volume><issue>1</issue><spage>193</spage><epage>201</epage><pages>193-201</pages><issn>0004-640X</issn><eissn>1572-946X</eissn><abstract>The generalized Chaplygin gas (GCG) model in spatially flat universe is investigated. The cosmological consequences led by GCG model including the evolution of EoS parameter, deceleration parameter and dimensionless Hubble parameter are calculated. We show that the GCG model behaves as a general quintessence model. The GCG model can also represent the pressureless CDM model at the early time and cosmological constant model at the late time. The dependency of transition from decelerated expansion to accelerated expansion on the parameters of model is investigated. The statefinder parameters
r
and
s
in this model are derived and the evolutionary trajectories in
s
–
r
plane are plotted. Finally, based on current observational data, we plot the evolutionary trajectories in
s
–
r
and
q
–
r
planes for best fit values of the parameters of GCG model. It has been shown that although, there are similarities between GCG model and other forms of Chaplygin gas in statefinder plane, but the distance of this model from the ΛCDM fixed point in
s
–
r
diagram is shorter compare with standard Chaplygin gas model.</abstract><cop>Dordrecht</cop><pub>Springer Netherlands</pub><doi>10.1007/s10509-011-0671-4</doi><tpages>9</tpages></addata></record> |
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| subjects | Astrobiology Astronomy Astrophysics Astrophysics and Astroparticles Chaplygin gas Cosmology Deceleration Evolution Evolutionary Gases Mathematical models Observations and Techniques Original Article Physics Physics and Astronomy Planes Space Exploration and Astronautics Space Sciences (including Extraterrestrial Physics Trajectories Universe |
| title | Generalized Chaplygin gas model: cosmological consequences and statefinder diagnosis |
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