scholarly journals Axion-like particle oscillations

2022 ◽  
Vol 2022 (01) ◽  
pp. 013
Author(s):  
Francesca Chadha-Day
Keyword(s):  
String Theory ◽  
Linear Combination ◽  
Neutrino Oscillations ◽  
Solar Telescope ◽  
Mass Basis

Abstract String theory compactifications may generate many light axion-like particles (ALPs) with weak couplings to electromagnetism. In general, a large number of ALPs may exist, with a linear combination having a potentially observable coupling to electromagnetism. The basis in which only one ALP couples to electromagnetism is in general misaligned with the mass basis. This leads to mixing between the `electromagnetic' ALP and a number of `hidden' ALPs that do not interact directly with the photon. The process is analagous to neutrino oscillations. I will discuss the phenomenological consequences of this mixing for astrophysical ALP signals, in particular showing that it may significantly reduce the predicted signal in experiments such as the CERN Axion Solar Telescope.

scholarly journals Neutrino oscillations from string theory

1998 ◽  
Vol 416 (3-4) ◽  
pp. 361-364 ◽  
Author(s):  
A. Halprin ◽  
C.N. Leung
Keyword(s):  
String Theory ◽  
Neutrino Oscillations

scholarly journals HOW FAST CAN A BLACK HOLE RELEASE ITS INFORMATION?

2009 ◽  
Vol 18 (14) ◽  
pp. 2215-2219 ◽  
Author(s):  
SAMIR D. MATHUR
Keyword(s):  
Black Hole ◽  
Wave Function ◽  
String Theory ◽  
Quantum Gravity ◽  
Linear Combination ◽  
Evaporation Time ◽  
Simple Estimate ◽  
Semiclassical Physics ◽  
Gravity Effects ◽  
Spreading Time

When a shell collapses through its horizon, semiclassical physics suggests that information cannot escape from this horizon. One might hope that nonperturbative quantum gravity effects will change this situation and avoid the information paradox. We note that string theory has provided a set of states over which the wave function of the shell can spread, and that the number of these states is large enough that such a spreading would significantly modify the classically expected evolution. In this article we perform a simple estimate of the spreading time, showing that it is much shorter than the Hawking evaporation time for the hole. Thus information can emerge from the hole through the relaxation of the shell state into a linear combination of fuzzballs.

scholarly journals SUPPRESSION OF 0ν2β DECAY FROM CP VIOLATION

2007 ◽  
Vol 16 (02) ◽  
pp. 561-565
Author(s):  
MAREK GÓŹDŹ ◽  
WIESŁAW A. KAMIŃSKI
Keyword(s):  
Cp Violation ◽  
Beta Decay ◽  
Half Life ◽  
Neutrino Oscillations ◽  
Mass Matrix ◽  
Neutrinoless Double Beta Decay ◽  
Double Beta Decay ◽  
Weak Basis ◽  
The Masses ◽  
Mass Basis

The observed phenomenon of neutrino oscillations is interpreted as the proof that neutrinos must have mass. As this is true for the neutrinos in the mass basis, the mass matrix in the flavor (weak) basis may still contain zeros. This can happen if the CP violating phases, usually neglected, come into play and result in suppression of processes which half-life depends on the masses of νe, νμ, or ντ. In the present paper we investigate the possibility of such suppression of the neutrinoless double beta decay (0ν2β).

Introduction to the Solar Space Telescope

2000 ◽  
Vol 179 ◽  
pp. 141-147
Author(s):  
G. Ai ◽  
S. Jin ◽  
S. Wang ◽  
B. Ye ◽  
S. Yang
Keyword(s):  
Solar Telescope ◽  
Basic Aspect ◽  
Space Telescope ◽  
Space Solar Telescope

AbstractThe design of the space solar telescope (SST) (phase B) has been completed. The manufacturing is under development. At the end of 2000, it will be assembled. The basic aspect will be introduced in this paper.

A Mathematical Introduction to String Theory

1997 ◽  
Author(s):  
Sergio Albeverio ◽  
Jurgen Jost ◽  
Sylvie Paycha ◽  
Sergio Scarlatti
Keyword(s):  
String Theory

String Theory

1998 ◽  
Author(s):  
Joseph Polchinski
Keyword(s):  
String Theory
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