The Cosmic Microwave Background as a Probe of Particle Physics

Author(s):  
Joseph Silk
Physics Today ◽  
2015 ◽  
Vol 68 (3) ◽  
pp. 28-34 ◽  
Author(s):  
John E. Carlstrom ◽  
Thomas M. Crawford ◽  
Lloyd Knox

2016 ◽  
Vol 32 (02) ◽  
pp. 1730002 ◽  
Author(s):  
David Leon ◽  
Jonathan Kaufman ◽  
Brian Keating ◽  
Matthew Mewes

One of the most powerful probes of new physics is the polarized cosmic microwave background (CMB). The detection of a nonzero polarization angle rotation between the CMB surface of last scattering and today could provide evidence of Lorentz-violating physics. The purpose of this paper is two-fold. First, we review one popular mechanism for polarization rotation of CMB photons: the pseudo-Nambu–Goldstone boson (PNGB). Second, we propose a method to use the Polarbear experiment to constrain Lorentz-violating physics in the context of the Standard Model Extension (SME), a framework to standardize a large class of potential Lorentz-violating terms in particle physics.


2016 ◽  
Vol 25 (11) ◽  
pp. 1640007 ◽  
Author(s):  
Alessandro Gruppuso

The Planck 2015 cosmic microwave background (CMB) likelihood is employed to constrain the cosmological birefringence angle, i.e. the in vacuo rotation of the linear polarization that CMB photons would experience during propagation in case of parity violating coupling within the electromagnetic sector of the Standard Model of particle physics. We find [Formula: see text] which is well compatible with no parity violation mechanism in action from recombination epoch to present.


2019 ◽  
Vol 16 (supp01) ◽  
pp. 1940004
Author(s):  
Gianluca Calcagni

We review recent theoretical progress and observational constraints on multifractional spacetimes, geometries that change with the probed scale. On the theoretical side, the basic structure of the Standard Model and of the gravitational action is discussed. On the experimental side, we recall the bounds on the scales of the geometry coming from particle physics, astrophysics and the cosmic microwave background.


1997 ◽  
Vol 483 (1) ◽  
pp. 38-50 ◽  
Author(s):  
R. Bruce Partridge ◽  
Eric A. Richards ◽  
Edward B. Fomalont ◽  
K. I. Kellerman ◽  
Rogier A. Windhorst

2011 ◽  
Vol 526 ◽  
pp. L7 ◽  
Author(s):  
P. Noterdaeme ◽  
P. Petitjean ◽  
R. Srianand ◽  
C. Ledoux ◽  
S. López

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