Description |
Inflationary paradigm not only explains the shortcomings of Big Bang cosmology but also provides a
mechanism of generation of primordial fluctuations which we observe today as large scale structures (LSS) and anisotropies in the temperature of CMBR. The fact, that these primordial perturbations produced during inflation were quantum in nature and what we observe today as LSS and CMBR anisotropy are all classical, raises a question as when and how these primordial perturbations become classical. Continuous Spontaneous Localization (CSL), a mechanism which modifies Schrodinger equation by adding non-linear stochastic terms, tries to answer such questions of emergence of classical behavior of macroscopic objects in laboratory systems. In this talk we will see how a CSL-like mechanism modifies the dynamics of the primordial perturbations during inflation and show that within a certain parameter range such CSL-like modifications can explain the macro-objectification of primordial quantum fluctuation while maintaining the scale-invariance of the power spectrum and the phase coherence of super-horizon modes to be consistent with present observations like WMAP and PLANCK. |