scholarly journals Radiative decays of φ-meson about nature of light scalar resonances

2003 ◽  
Vol 728 (3-4) ◽  
pp. 425-438 ◽  
Author(s):  
N.N. Achasov
Keyword(s):  
Radiative Decays ◽  
Light Scalar ◽  
Scalar Resonances

scholarly journals RADIATIVE DECAYS INVOLVING LIGHT SCALAR MESONS

2003 ◽  
Author(s):  
DEIRDRE BLACK ◽  
MASAYASU HARADA ◽  
JOSEPH SCHECHTER
Keyword(s):  
Radiative Decays ◽  
Scalar Mesons ◽  
Light Scalar

scholarly journals A cosmic microscope for the preheating era

2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
JiJi Fan ◽  
Zhong-Zhi Xianyu
Keyword(s):  
Scalar Field ◽  
Nonlinear Effect ◽  
Large Scale ◽  
Nonlinear Effects ◽  
Light Fields ◽  
Unique Probe ◽  
Light Scalar ◽  
Spatially Varying ◽  
Near Future ◽  
Scalar Perturbations

Abstract Light fields with spatially varying backgrounds can modulate cosmic preheating, and imprint the nonlinear effects of preheating dynamics at tiny scales on large scale fluctuations. This provides us a unique probe into the preheating era which we dub the “cosmic microscope”. We identify a distinctive effect of preheating on scalar perturbations that turns the Gaussian primordial fluctuations of a light scalar field into square waves, like a diode. The effect manifests itself as local non-Gaussianity. We present a model, “modulated partial preheating”, where this nonlinear effect is consistent with current observations and can be reached by near future cosmic probes.

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