Constraints on a Bianchi type I spacetime extension of the standard ΛCDM model

被引：85

作者：

Akarsu, Ozgur ^{[1
]}

Kumar, Suresh ^{[2
]}

Sharma, Shivani ^{[2
]}

Tedesco, Luigi ^{[3
,4
]}

机构：

[1] Istanbul Tech Univ, Dept Phys, TR-34469 Istanbul, Turkey

[2] BITS Pilani, Dept Math, Pilani Campus, Pilani 333031, Rajasthan, India

[3] Univ Bari, Dipartimento Fis, I-70126 Bari, Italy

[4] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy

来源：

PHYSICAL REVIEW D | 2019年 / 100卷 / 02期

关键词：

BARYON ACOUSTIC-OSCILLATIONS; LUMINOUS RED GALAXIES; DARK ENERGY; INFLATIONARY UNIVERSE; COSMOLOGICAL MODELS; BAYESIAN-INFERENCE; POWER-SPECTRUM; CENT DISTANCE; ISOTROPY; SKY;

D O I：

10.1103/PhysRevD.100.023532

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We consider the simplest anisotropic generalization, as a correction, to the standard Lambda CDM model, by replacing the spatially flat Robertson-Walker metric by the Bianchi type-I metric, which brings in a new term Omega sigma s(0) a(-6) (mimicking the stiff fluid) in the average expansion rate Hoathorn of the Universe. From Hubble and Pantheon data, relevant to the late Universe (z less than or similar to 2.4), we obtain the constraint Omega sigma 0 less than or similar to 10(-3), in line with the model-independent constraints. When the baryonic acoustic oscillations and cosmic microwave background (CMB) data are included, the constraint improves by 12 orders of magnitude, i.e., Omega sigma 0 less than or similar to 10(-15). We find that this constraint could alter neither the matter-radiation equality redshift nor the peak of the matter perturbations. Demanding that the expansion anisotropy has no significant effect on the standard big bang nucleosynthesis (BBN), we find the constraint Omega sigma 0 less than or similar to 10(-23). We show explicitly that the constraint from BBN renders the expansion anisotropy irrelevant to make a significant change in the CMB quadrupole temperature, whereas the constraint from the cosmological data in our model provides the temperature change up to similar to 11 mK, though it is much beyond the CMB quadrupole temperature.

引用

页数：14

共 123 条

[1] Measurement of the Bs0 → μ+μ- Branching Fraction and Search for B0 → μ+μ- Decays at the LHCb Experiment [J].

Aaij, R. ;

Adeva, B. ;

Adinolfi, M. ;

Adrover, C. ;

Affolder, A. ;

Ajaltouni, Z. ;

Albrecht, J. ;

Alessio, F. ;

Alexander, M. ;

Ali, S. ;

Alkhazov, G. ;

Alvarez Cartelle, P. ;

Alves, A. A., Jr. ;

Amato, S. ;

Amerio, S. ;

Amhis, Y. ;

Anderlini, L. ;

Anderson, J. ;

Andreassen, R. ;

Andrews, J. E. ;

Appleby, R. B. ;

Gutierrez, O. Aquines ;

Archilli, F. ;

Artamonov, A. ;

Artuso, M. ;

Aslanides, E. ;

Auriemma, G. ;

Baalouch, M. ;

Bachmann, S. ;

Back, J. J. ;

Badalov, A. ;

Baesso, C. ;

Balagura, V. ;

Baldini, W. ;

Barlow, R. J. ;

Barschel, C. ;

Barsuk, S. ;

Barter, W. ;

Bauer, Th. ;

Bay, A. ;

Beddow, J. ;

Bedeschi, F. ;

Bediaga, I. ;

Belogurov, S. ;

Belous, K. ;

Belyaev, I. ;

Ben-Haim, E. ;

Bencivenni, G. ;

Benson, S. ;

Benton, J. .

PHYSICAL REVIEW LETTERS, 2013, 111 (10)

[2] Anisotropic inflation with a non-minimally coupled electromagnetic field to gravity [J].

Adak, Muzaffer ;

Akarsu, Ozgur ;

Dereli, Tekin ;

Sert, Ozcan .

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2017, (11)

[3] Planck 2015 results XVII. Constraints on primordial non-Gaussianity [J].

Ade, P. A. R. ;

Aghanim, N. ;

Arnaud, M. ;

Arrojam, F. ;

Ashdown, M. ;

Aumont, J. ;

Baccigalupi, C. ;

Ballardini, M. ;

Banday, A. J. ;

Barreiro, R. B. ;

Bartolo, N. ;

Basak, S. ;

Battaner, E. ;

Benabed, K. ;

Benoit, A. ;

Benoit-Levy, A. ;

Bernard, J. -P. ;

Bersanelli, M. ;

Bielewicz, P. ;

Bock, J. J. ;

Bonaldi, A. ;

Bonavera, L. ;

Bond, J. R. ;

Borrill, J. ;

Bouchet, F. R. ;

Boulanger, F. ;

Bucher, M. ;

Burigana, C. ;

Butler, R. C. ;

Calabrese, E. ;

Cardoso, J. -F. ;

Catalano, A. ;

Challinor, A. ;

Chamballu, A. ;

Chiang, H. C. ;

Christensen, P. R. ;

Church, S. ;

Clements, D. L. ;

Colombi, S. ;

Colombo, L. P. L. ;

Combet, C. ;

Couchot, F. ;

Coulais, A. ;

Crill, B. P. ;

Curto, A. ;

Cuttaia, F. ;

Danese, L. ;

Davies, R. D. ;

Davis, R. J. ;

de Bernardis, P. .

ASTRONOMY & ASTROPHYSICS, 2016, 594

[4] Planck 2013 results. XXIII. Isotropy and statistics of the CMB [J].

Ade, P. A. R. ;

Aghanim, N. ;

Armitage-Caplan, C. ;

Arnaud, M. ;

Ashdown, M. ;

Atrio-Barandela, F. ;

Aumont, J. ;

Baccigalupi, C. ;

Banday, A. J. ;

Barreiro, R. B. ;

Bartlett, J. G. ;

Bartolo, N. ;

Battaner, E. ;

Battye, R. ;

Benabed, K. ;

Benoit, A. ;

Benoit-Levy, A. ;

Bernard, J. -P. ;

Bersanelli, M. ;

Bielewicz, P. ;

Bobin, J. ;

Bock, J. J. ;

Bonaldi, A. ;

Bonavera, L. ;

Bond, J. R. ;

Borrill, J. ;

Bouchet, F. R. ;

Bridges, M. ;

Bucher, M. ;

Burigana, C. ;

Butler, R. C. ;

Cardoso, J. -F. ;

Catalano, A. ;

Challinor, A. ;

Chamballu, A. ;

Chary, R. -R. ;

Chiang, H. C. ;

Chiang, L. -Y ;

Christensen, P. R. ;

Church, S. ;

Clements, D. L. ;

Colombi, S. ;

Colombo, L. P. L. ;

Couchot, F. ;

Coulais, A. ;

Crill, B. P. ;

Cruz, M. ;

Curto, A. ;

Cuttaia, F. ;

Danese, L. .

ASTRONOMY & ASTROPHYSICS, 2014, 571

[5] Planck 2013 results. XV. CMB power spectra and likelihood [J].

Ade, P. A. R. ;

Aghanim, N. ;

Armitage-Caplan, C. ;

Arnaud, M. ;

Ashdown, M. ;

Atrio-Barandela, F. ;

Aumont, J. ;

Baccigalupi, C. ;

Banday, A. J. ;

Barreiro, R. B. ;

Bartlett, J. G. ;

Battaner, E. ;

Benabed, K. ;

Benoit, A. ;

Benoit-Levy, A. ;

Bemard, J. -P. ;

Bersanelli, M. ;

Bielewicz, P. ;

Bobin, J. ;

Bock, J. J. ;

Bonaldi, A. ;

Bonavera, L. ;

Bond, J. R. ;

Borrill, J. ;

Bouchet, F. R. ;

Boulanger, F. ;

Bridges, M. ;

Bucher, M. ;

Burigana, C. ;

Butler, R. C. ;

Calabrese, E. ;

Cardoso, J. -F. ;

Catalano, A. ;

Challinor, A. ;

Chamballu, A. ;

Chiang, H. C. ;

Chiang, L. -Y ;

Christensen, P. R. ;

Church, S. ;

Clements, D. L. ;

Colombi, S. ;

Colombo, L. P. L. ;

Combet, C. ;

Couchot, F. ;

Coulais, A. ;

Crill, B. P. ;

Curto, A. ;

Cuttaia, F. ;

Danese, L. ;

Davies, R. D. .

ASTRONOMY & ASTROPHYSICS, 2014, 571

[6] Planck 2013 results. XXV. Searches for cosmic strings and other topological defects [J].

Ade, P. A. R. ;

Aghanim, N. ;

Armitage-Caplan, C. ;

Arnaud, M. ;

Ashdown, M. ;

Atrio-Barandela, F. ;

Aumont, J. ;

Baccigalupi, C. ;

Banday, A. J. ;

Barreiro, R. B. ;

Bartlett, J. G. ;

Bartolo, N. ;

Battaner, E. ;

Battye, R. ;

Benabed, K. ;

Benoit, A. ;

Benoit-Levy, A. ;

Bernard, J. -P. ;

Bersanelli, M. ;

Bielewicz, P. ;

Bobin, J. ;

Bock, J. J. ;

Bonaldi, A. ;

Bonavera, L. ;

Bond, J. R. ;

Borrill, J. ;

Bouchet, F. R. ;

Bridges, M. ;

Bucher, M. ;

Burigana, C. ;

Butler, R. C. ;

Cardoso, J. -F. ;

Catalano, A. ;

Challinor, A. ;

Chamballu, A. ;

Chiang, L. -Y ;

Chiang, H. C. ;

Christensen, P. R. ;

Church, S. ;

Clements, D. L. ;

Colombi, S. ;

Colombo, L. P. L. ;

Couchot, F. ;

Coulais, A. ;

Crill, B. P. ;

Curto, A. ;

Cuttaia, F. ;

Danese, L. ;

Davies, R. D. ;

Davis, R. J. .

ASTRONOMY & ASTROPHYSICS, 2014, 571

[7]

Ade P.A.R., 2014, A A, V571, pA24, DOI [10.1051/0004-6361/201321554, DOI 10.1051/0004-6361/201321521]

[8]

Aghanim N., 2018, ARXIV180706209

[9]

Akarsu O., ARXIV190306679

[10] LRS Bianchi type I models with anisotropic dark energy and constant deceleration parameter [J].

Akarsu, Oezguer ;

Kilinc, Can Battal .

GENERAL RELATIVITY AND GRAVITATION, 2010, 42 (01) :119-140

← 1 2 3 4 5 6 7 8 9 10 →