102 citations · 725 across the 38 of their papers we have counts for
18 papers · 1 filter
Alternative theory for the quantum black hole and the temperature of its quantum radiation
Gerard t Hooft
A mechanism is found that explains how matter falling into the future event horizon of a black hole leaves information there, which it sends to the past event horizon, and there it…
How an exact discrete symmetry can preserve black hole information or Turning a black hole inside out
Gerard t Hooft
To apply the laws of General Relativity to quantum black holes, one first needs to remove the horizon singularity by means of Kruskal-Szekeres coordinates. This however doubles spa…
Quantum clones inside black holes
Gerard t Hooft
A systematic procedure is proposed for better understanding the evolution laws of black holes in terms of pure quantum states. We start with the two opposed regions I and II in the…
The Black Hole Firewall Transformation and Realism in Quantum Mechanics
Gerard t Hooft
A procedure to derive a unitary evolution law for a quantised black hole, has been proposed by the author. The proposal requires that one starts off with the entire Penrose diagram…
The quantum black hole as a theoretical lab, a pedagogical treatment of a new approach
Gerard t Hooft
Getting the mathematical rules for quantised black holes correctly is far from straightforward. Many earlier treatises got it not quite correctly. The general relativistic transfor…
Discreteness of Black Hole Microstates
Gerard `t Hooft
It is explained that, for black holes much heavier than the Planck mass, black hole microstates can be well understood without string theory. It is essential to understand the anti…
What happens in a black hole when a particle meets its antipode
Gerard t Hooft
The notion of antipodal identification on the black hole horizon is further explained and elaborated. Contrasting with numerous attempts in the literature to make fuzzy, poorly mot…
The Quantum Black Hole as a Hydrogen Atom: Microstates Without Strings Attached
Gerard t Hooft
Applying an expansion in spherical harmonics, turns the black hole with its microstates into something about as transparent as the hydrogen atom was in the early days of quantum me…
The Conformal Constraint in Canonical Quantum Gravity
Gerard 't Hooft
Perturbative canonical quantum gravity is considered, when coupled to a renormalizable model for matter fields. It is proposed that the functional integral over the dilaton field s…
Probing the small distance structure of canonical quantum gravity using the conformal group
Gerard 't Hooft
In canonical quantum gravity, the formal functional integral includes an integration over the local conformal factor, and we propose to perform the functional integral over this fa…
Quantum gravity without space-time singularities or horizons
Gerard 't Hooft
In an attempt to re-establish space-time as an essential frame for formulating quantum gravity - rather than an "emergent" one -, we find that exact invariance under scale transfor…
The black hole horizon as a dynamical system
Gerard 't Hooft
Interactions between outgoing Hawking particles and ingoing matter are determined by gravitational forces and Standard Model interactions. In particular the gravitational interacti…
Invariance under complex transformations, and its relevance to the cosmological constant problem
Gerard 't Hooft, Stefan Nobbenhuis
In this paper we study a new symmetry argument that results in a vacuum state with strictly vanishing vacuum energy. This argument exploits the well-known feature that de Sitter an…
The holographic mapping of the Standard Model onto the black hole horizon, Part I: Abelian vector field, scalar field and BEH Mechanism
G. 't Hooft
Interactions between outgoing Hawking particles and ingoing matter are determined by gravitational forces and Standard Model interactions. In particular the gravitational interacti…
Distinguishing causal time from Minkowski time and a model for the black hole quantum eigenstates
G. 't Hooft
A discussion is presented of the principle of black hole com- plementarity. It is argued that this principle could be viewed as a breakdown of general relativity, or alternatively,…
Quantization of Space and Time in 3 and in 4 Space-time Dimensions
G. 't Hooft
The fact that in Minkowski space, space and time are both quantized does not have to be introduced as a new postulate in physics, but can actually be derived by combining certain f…
Quantum information and information loss in General Relativity
G. 't Hooft
When it comes to performing thought experiments with black holes, Einstein-Bohr like discussions have to be re-opened. For instance one can ask what happens to the quantum state of…
Horizon Operator Approach to Black Hole Quantization
G. 't Hooft
The -matrix Ansatz for the construction of a quantum theory of black holes is further exploited. We first note that treating the metric tensor $g_{\m\n}$ as an operator rather t…