Delta Resonance Coupling with Walecka’s Mesons: Implications to Stellar Matter EoS
In this work we have obtained the equation of state to the highly asymmetric dense stellar matter, using the nonlinear Walecka model in the mean field approximation. We discussed the implication of changes in coupling constant of the delta baryonic resonance on the observable of the neutron star. A...
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| creator | Gomes, William Silva de Oliveira, José Carlos Teixeira Rodrigues, Hilário Duarte, Sérgio B. |
| description | In this work we have obtained the equation of state to the highly asymmetric dense stellar matter, using the nonlinear Walecka model in the mean field approximation. We discussed the implication of changes in coupling constant of the delta baryonic resonance on the observable of the neutron star. A detailed analysis of the equation of state and of the baryonic effective mass in respect to changes in the delta coupling constants is carried out. We focus attention on a new aspect observed for pressure when varying the baryonic density of the medium; a first order phase transition like a liquid-gas phase transition was observed for an acceptable range of delta coupled constant values. We have explored the implication of this aspect for the neutron star structure and their maximum masses. |
| doi_str_mv | 10.1142/S2010194517600345 |
| format | Conference Proceeding |
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We discussed the implication of changes in coupling constant of the delta baryonic resonance on the observable of the neutron star. A detailed analysis of the equation of state and of the baryonic effective mass in respect to changes in the delta coupling constants is carried out. We focus attention on a new aspect observed for pressure when varying the baryonic density of the medium; a first order phase transition like a liquid-gas phase transition was observed for an acceptable range of delta coupled constant values. We have explored the implication of this aspect for the neutron star structure and their maximum masses.</description><identifier>ISSN: 2010-1945</identifier><identifier>EISSN: 2010-1945</identifier><identifier>DOI: 10.1142/S2010194517600345</identifier><language>eng</language><publisher>Singapore: World Scientific Publishing Company</publisher><subject>Baryons ; Coupling ; Equations of state ; Low Temperature Astrophysics, Supermassive Black Holes, Magnetars, Strange Stars, Magnetic Fields in the Universe and in Compact Stars, Dense Quark and Hadron Matter Physics and Astrophysics, Supernovae, Pulsars, Neutron Stars and White Dwarfs ; Mesons ; Neutron stars ; Neutrons ; Phase transitions ; Vapor phases</subject><ispartof>International journal of modern physics. Conference series, 2017, Vol.45, p.1760034</ispartof><rights>2017, The Author(s)</rights><rights>2017. The Author(s). This is an Open Access article published by World Scientific Publishing Company. 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We have explored the implication of this aspect for the neutron star structure and their maximum masses.</description><subject>Baryons</subject><subject>Coupling</subject><subject>Equations of state</subject><subject>Low Temperature Astrophysics, Supermassive Black Holes, Magnetars, Strange Stars, Magnetic Fields in the Universe and in Compact Stars, Dense Quark and Hadron Matter Physics and Astrophysics, Supernovae, Pulsars, Neutron Stars and White Dwarfs</subject><subject>Mesons</subject><subject>Neutron stars</subject><subject>Neutrons</subject><subject>Phase transitions</subject><subject>Vapor phases</subject><issn>2010-1945</issn><issn>2010-1945</issn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2017</creationdate><recordtype>conference_proceeding</recordtype><sourceid>ADCHV</sourceid><recordid>eNplUM1KAzEQDqJgqX0AbwHPq_ndbrxJrVpoEWzF45ImWU1NNzVJKd58DV_PJzFLRQQPw8x8833zB8ApRucYM3IxJwgjLBjHwxIhyvgB6HVQ0WGHf-JjMIhxhRDC1bASnPXA4tq4JOGDib6VrTJw5LcbZ9tnuLPpBT5JZ9Sr_Pr4jHDWceIlnKwzQclkcwaTh_NknJMBzmRKJsCxn5-Ao0a6aAY_vg8eb8aL0V0xvb-djK6mhSJU8ILRcsmV1gQ3S2TE0ugKNaaRnJB8BBJUKlkxqkguqFJXjS4Fp3l3SQUzWtE-ONv33QT_tjUx1Su_DW0eWRPMEa9oZ32A9ywVfIzBNPUm2LUM7zVGdfe_-t__sgbtNTsfnI7KmjbZxqpf6X_JN3BSckY</recordid><startdate>2017</startdate><enddate>2017</enddate><creator>Gomes, William Silva</creator><creator>de Oliveira, José Carlos Teixeira</creator><creator>Rodrigues, Hilário</creator><creator>Duarte, Sérgio B.</creator><general>World Scientific Publishing Company</general><general>World Scientific Publishing Co. 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Conference series</btitle><date>2017</date><risdate>2017</risdate><volume>45</volume><spage>1760034</spage><pages>1760034-</pages><issn>2010-1945</issn><eissn>2010-1945</eissn><abstract>In this work we have obtained the equation of state to the highly asymmetric dense stellar matter, using the nonlinear Walecka model in the mean field approximation. We discussed the implication of changes in coupling constant of the delta baryonic resonance on the observable of the neutron star. A detailed analysis of the equation of state and of the baryonic effective mass in respect to changes in the delta coupling constants is carried out. We focus attention on a new aspect observed for pressure when varying the baryonic density of the medium; a first order phase transition like a liquid-gas phase transition was observed for an acceptable range of delta coupled constant values. 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| identifier | ISSN: 2010-1945 |
| ispartof | International journal of modern physics. Conference series, 2017, Vol.45, p.1760034 |
| issn | 2010-1945 2010-1945 |
| language | eng |
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| source | World Scientific Open; EZB-FREE-00999 freely available EZB journals; World Scientific Journals |
| subjects | Baryons Coupling Equations of state Low Temperature Astrophysics, Supermassive Black Holes, Magnetars, Strange Stars, Magnetic Fields in the Universe and in Compact Stars, Dense Quark and Hadron Matter Physics and Astrophysics, Supernovae, Pulsars, Neutron Stars and White Dwarfs Mesons Neutron stars Neutrons Phase transitions Vapor phases |
| title | Delta Resonance Coupling with Walecka’s Mesons: Implications to Stellar Matter EoS |
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