CONSTRAINTS ON COSMOLOGY FROM THE COSMIC MICROWAVE BACKGROUND POWER SPECTRUM OF THE 2500 deg<sup>2</sup>SPT-SZ SURVEY

Hou, Z.; Reichardt, Christian; Story, K. T.; Follin, Brent; Keisler, R.; Aird, K. A.; Benson, B. A.; Bleem, L. E.; Carlstrom, J. E.; Chang, C. L.; Cho, H. M.; Crawford, T. M.; Crites, A. T.; Haan, T. de; Putter, Roland de; Dobbs, M.; Dodelson, Scott; Dudley, J. P.; George, E. M.; Halverson, N. W.; Holder, G. P.; Holzapfel, W. L.; Hoover, S.; Hrubes, J. D.; Joy, M.; Knox, L.; Lee, A. T.; Leitch, E. M.; Lueker, M.; Luong-Van, D.; McMahon, Jeff; Mehl, J.; Meyer, S. S.; Millea, M.; Mohr, J. J.; Montroy, T. E.; Padin, S.; Plagge, T.; Pryke, C.; Ruhl, J. E.; Sayre, J. T.; Schaffer, K. K.; Shaw, L.; Shirokoff, E.; Spieler, H.; Staniszewski, Z.; Stark, A. A.; Engelen, A. van; Vanderlinde, K.; Vieira, J. D.; Williamson, A. R.; Zahn, O.

doi:10.1088/0004-637x/782/2/74

Cited by 230 publications

(304 citation statements)

References 59 publications

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“…As expected, far from the source r r , we see that the force goes as ∼ (r /r) 2 as expected, while near the source, the ratio between the force due to the scalar and that due to gravity scales as 19) which is precisely the n → ∞ limit of (6.15). In [200], screening of this (D)BI-type was dubbed BIonic screening, and it can be thought of as an edge case of screening intermediate between finiteorder kinetic screening and Vainshtein screening, which we will discuss in the next section.…”

Section: Generalizationssupporting

confidence: 83%

“…Symmetron fields have also been used for inflation [420]. 19 We have adopted the conventions of [247] for the HS model, which takes M 2 = m 2 /c 1/n 2 and a = c1c 1/n−1 2 relative to [322].…”

Section: Symmetron Mechanismmentioning

confidence: 99%

“…Indeed, in the last decade the basic parameters of the accelerating universe are well measured even without using supernova data-providing a powerful consistency check. The two other powerful methods that have been used to measure the geometry of the universe are: the cosmic microwave background (CMB) [13][14][15][16][17][18][19][20][21][22] and the Baryonic Acoustic Oscillation (BAO) feature in the galaxy power spectrum [23][24][25][26][27][28][29][30]. In fact, since measurement of q 0 only constrains the linear combination 1 2 Ω m − Ω Λ , these measurements are a very powerful tool in breaking the degeneracy between these two parameters.…”

Section: The Accelerating Universementioning

confidence: 99%

“…There is overwhelming observational evidence that the universe is undergoing accelerated expansion from observations of type Ia supernovae [1][2][3][4][5][6][7][8][9][10][11][12], from Cosmic Microwave Background measurements [13][14][15][16][17][18][19][20][21][22], and from detailed studies of large-scale structure [23][24][25][26][27][28][29][30]. All of the measurements are in good agreement, with all data consistent with a Λ-cold dark matter (ΛCDM) cosmology [31,32], with a value of the cosmological constant of about Λ obs.…”

Section: Introduction 1 the Cosmological Constant And Its Discontentsmentioning

confidence: 99%

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Beyond the cosmological standard model

et al. 2015

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After a decade and a half of research motivated by the accelerating universe, theory and experiment have a reached a certain level of maturity. The development of theoretical models beyond Λ or smooth dark energy, often called modified gravity, has led to broader insights into a path forward, and a host of observational and experimental tests have been developed. In this review we present the current state of the field and describe a framework for anticipating developments in the next decade. We identify the guiding principles for rigorous and consistent modifications of the standard model, and discuss the prospects for empirical tests.We begin by reviewing recent attempts to consistently modify Einstein gravity in the infrared, focusing on the notion that additional degrees of freedom introduced by the modification must "screen" themselves from local tests of gravity. We categorize screening mechanisms into three broad classes: mechanisms which become active in regions of high Newtonian potential, those in which first derivatives of the field become important, and those for which second derivatives of the field are important. Examples of the first class, such as f (R) gravity, employ the familiar chameleon or symmetron mechanisms, whereas examples of the last class are galileon and massive gravity theories, employing the Vainshtein mechanism. In each case, we describe the theories as effective theories and discuss prospects for completion in a more fundamental theory. We describe experimental tests of each class of theories, summarizing laboratory and solar system tests and describing in some detail astrophysical and cosmological tests. Finally, we discuss prospects for future tests which will be sensitive to different signatures of new physics in the gravitational sector.The review is structured so that those parts that are more relevant to theorists vs. observers/experimentalists are clearly indicated, in the hope that this will serve as a useful reference for both audiences, as well as helping those interested in bridging the gap between them.

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Section: Generalizationssupporting

confidence: 83%

Section: Symmetron Mechanismmentioning

confidence: 99%

Section: The Accelerating Universementioning

confidence: 99%

Section: Introduction 1 the Cosmological Constant And Its Discontentsmentioning

confidence: 99%

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Beyond the cosmological standard model

et al. 2015

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“…Planck also failed to find a statistically significant running of the scalar spectral index, obtaining α s = −0.0134 ± 0.0090. On the other hand, high-resolution CMB experiments, such as the South Pole Telescope (SPT) 1 , report a small running of the spectral index; −0.046 < α s < −0.003 at 95% confidence (Hou et al 2014). However, in general, any such detections have been weak and were consistent with zero.…”

Section: Introductionmentioning

confidence: 99%

PRISM: Recovery of the primordial spectrum fromPlanckdata

Lanusse

Paykari

Starck

et al. 2014

A&A

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Aims. The primordial power spectrum describes the initial perturbations that seeded the large-scale structure we observe today. It provides an indirect probe of inflation or other structure-formation mechanisms. In this Letter, we recover the primordial power spectrum from the Planck PR1 dataset, using our recently published algorithm PRISM. Methods. PRISM is a sparsity-based inversion method that aims at recovering features in the primordial power spectrum from the empirical power spectrum of the cosmic microwave background (CMB). This ill-posed inverse problem is regularised using a sparsity prior on features in the primordial power spectrum in a wavelet dictionary. Although this non-parametric method does not assume a strong prior on the shape of the primordial power spectrum, it is able to recover both its general shape and localised features. As a results, this approach presents a reliable way of detecting deviations from the currently favoured scale-invariant spectrum.Results. We applied PRISM to 100 simulated Planck data to investigate its performance on Planck-like data. We then applied PRISM to the Planck PR1 power spectrum to recover the primordial power spectrum. We also tested the algorithm's ability to recover a small localised feature at k ∼ 0.125 Mpc −1 , which caused a large dip at ∼ 1800 in the angular power spectrum. Conclusions. We find no significant departures from the fiducial Planck PR1 near scale-invariant primordial power spectrum with A s = 2.215 × 10 −9 and n s = 0.9624.

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Thermodynamic Properties of Regular Phantom Black Hole

Haditale,

Malekolkalami

2024

Fortschritte der Physik

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The Regular Phantom Black Hole (RPBH)s are of theoretical and observational importance, some of their properties have been studied. In this work, some of thermodynamical properties such as entropy, temperature, etc., in three background cases, that is, flat, de–Sitter (dS) and Anti–de Sitter (AdS) are studied. Many of the RPBH properties, including horizon radius, are (directly or indirectly) dependent on a scale parameter . Due to the slightly different structure from Schwarzschild—like metrics, the method to express relations between thermodynamical variables requires a new function of the scale parameter. The local and global stability through the Heat Capacity (HC) and Gibbs free Energy (GE), respectively are also treated. In the AdS case, the regularized metric allows a Hawking‐Page like phase transition of first order. The calculations and graphs show the results in the flat background, are very similar to Schwarzschild black hole and the asymptotically AdS RPBH is more compatible with physical laws than the dS and flat backgrounds.

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CONSTRAINTS ON COSMOLOGY FROM THE COSMIC MICROWAVE BACKGROUND POWER SPECTRUM OF THE 2500 deg²SPT-SZ SURVEY

Cited by 230 publications

References 59 publications

Beyond the cosmological standard model

Beyond the cosmological standard model

PRISM: Recovery of the primordial spectrum fromPlanckdata

Thermodynamic Properties of Regular Phantom Black Hole

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CONSTRAINTS ON COSMOLOGY FROM THE COSMIC MICROWAVE BACKGROUND POWER SPECTRUM OF THE 2500 deg2SPT-SZ SURVEY

Cited by 230 publications

References 59 publications

Beyond the cosmological standard model

Beyond the cosmological standard model

PRISM: Recovery of the primordial spectrum fromPlanckdata

Thermodynamic Properties of Regular Phantom Black Hole

Contact Info

Product

Resources

About

CONSTRAINTS ON COSMOLOGY FROM THE COSMIC MICROWAVE BACKGROUND POWER SPECTRUM OF THE 2500 deg²SPT-SZ SURVEY