WASET
	@article{(Open Science Index):https://publications.waset.org/pdf/10005094,
	  title     = {Non-Singular Gravitational Collapse of a Homogeneous Scalar Field in Deformed Phase Space},
	  author    = {Amir Hadi Ziaie},
	  country	= {},
	  institution	= {},
	  abstract     = {In the present work, we revisit the collapse process of a spherically symmetric homogeneous scalar field (in FRW background) minimally coupled to gravity, when the phase-space deformations are taken into account. Such a deformation is mathematically introduced as a particular type of noncommutativity between the canonical momenta of the scale factor and of the scalar field. In the absence of such deformation, the collapse culminates in a spacetime singularity. However, when the phase-space is deformed, we find that the singularity is removed by a non-singular bounce, beyond which the collapsing cloud re-expands to infinity. More precisely, for negative values of the deformation parameter, we identify the appearance of a negative pressure, which decelerates the collapse to finally avoid the singularity formation. While in the un-deformed case, the horizon curve monotonically decreases to finally cover the singularity, in the deformed case the horizon has a minimum value that this value depends on deformation parameter and initial configuration of the collapse. Such a setting predicts a threshold mass for black hole formation in stellar collapse and manifests the role of non-commutative geometry in physics and especially in stellar collapse and supernova explosion.},
	    journal   = {International Journal of Physical and Mathematical Sciences},
	  volume    = {10},
	  number    = {8},
	  year      = {2016},
	  pages     = {388 - 391},
	  ee        = {https://publications.waset.org/pdf/10005094},
	  url   	= {https://publications.waset.org/vol/116},
	  bibsource = {https://publications.waset.org/},
	  issn  	= {eISSN: 1307-6892},
	  publisher = {World Academy of Science, Engineering and Technology},
	  index 	= {Open Science Index 116, 2016},
	}