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Is The Big Bang A Black Hole?
All of these FRW universes have a singularity at their beginning, which represents the Big Bang. Black holes also have singularities. Furthermore, in the case ... [ReadMore..]
How A Silence Solved The Weird Maths Inside Black Holes - BBC Future
Theoretical physicist Roger Penrose had a moment’s inspiration that upended our view of the Universe, writes his biographer Patchen Barss. Oct 9, 2020 ... His equations showed, for instance, that it was theoretically possible for gravitational collapse to force enough matter into a sufficiently ... [ReadMore..]
Are Singularities Real? | NOVA | PBS
They appear inside black holes and pose a big problem for physicists. What are singularities? Dec 9, 2015 ... They appear inside black holes and pose a big problem for physicists. ... Though they sound exotic, mathematical singularities are actually ... [ReadMore..]
Effective GUP-modified Raychaudhuri Equation And Black Hole ...
Sep 10, 2021 ... S. Hawking and R. Penrose, The Singularities of gravitational collapse ... General Relativity, Cambridge Monographs on Mathematical Physics, ... [ReadMore..]
Black Holes Without Spacelike Singularities
It is shown that for small, spherically symmetric perturbations of asymptotically flat two-ended Reissner-Nordström data for the Einstein-Maxwell-real scalar field system, the boundary of the dynamic spacetime which evolves is globally represented by a bifurcate null hypersurface across which the metric extends continuously. Under additional assumptions, it is shown that the Hawking mass blows up identically along this bifurcate null hypersurface, and thus the metric cannot be extended twice differentiably, in fact, cannot be extended in a weaker sense characterized at the level of the Christoffel symbols. The proof combines estimates obtained in previous work with an elementary Cauchy stability argument. There are no restrictions on the size of the support of the scalar field, and the result applies to both the future and past boundary of spacetime. In particular, it follows that for an open set in the moduli space of solutions around Reissner-Nordström, there is no spacelike component of either the future Subjects: General Relativity and Quantum Cosmology (gr-qc); Mathematical Physics (math-ph); Differential Geometry (math.DG). Cite as: arXiv:1201.1797 [gr-qc]. [ReadMore..]
Does Every Black Hole Contain A Singularity? | Science Questions ...
In the real universe, no black holes contain singularities. In general, singularities are the non-physical mathematical result of a flawed physical... Sep 13, 2013 ... In the real universe, no black holes contain singularities. In general, singularities are the non-physical mathematical result of a flawed ... [ReadMore..]
The Geometry Of Black Hole Singularities
Recent results show that important singularities in General Relativity can be naturally described in terms of finite and invariant canonical geometric objects. Consequently, one can write field equations which are equivalent to Einstein's at non-singular points, but in addition remain well-defined and smooth at singularities. The black hole singularities appear to be less undesirable than it was thought, especially after we remove the part of the singularity due to the coordinate system. Black hole singularities are then compatible with global hyperbolicity, and don't make the evolution equations break down, when these are expressed in terms of the appropriate variables. The charged black holes turn out to have smooth potential and electromagnetic fields in the new atlas. Classical charged particles can be modeled, in General Relativity, as charged black hole solutions. Since black hole singularities are accompanied by dimensional reduction, this should affect Feynman's path integrals. Therefore, it is expect Jan 24, 2014 ... The black hole singularities appear to be less undesirable than it was ... Mathematical Physics (math-ph); Differential Geometry (math.DG). [ReadMore..]
Singularities Can Exist Outside Black Holes--in Other Universes ...
Recent work has shown how “naked singularities” might defy the cosmic censorship conjecture Aug 23, 2021 ... During the 1960s, British physicist Roger Penrose was in the midst of work on the mathematics of black holes and singularities that would ... [ReadMore..]
Strange Mathematical Term Changes Our Entire View Of Black Holes ...
Black holes keep getting weirder. Sep 23, 2021 ... "If you consider black holes within only general relativity, one can show that they have a singularity in their centres where the laws of ... [ReadMore..]
The pages related to black hole singularity math are also listed below:
Singularities And Black Holes (Stanford Encyclopedia Of Philosophy)
Jun 29, 2009 ... These theorems indicate that our universe began with an initial singularity, the Big Bang, approximately 14 billion years ago. They also ... [ReadMore..]
Black Hole Math
Apr 4, 2022 ... by presenting black hole concepts in their simplest mathematical form. ... contains our universe, but inside the event horizon, space and ... [ReadMore..]