activity
20002026
most citedOn the quantum origin of the seeds of cosmic structure

155 citations · 1.6k across the 64 of their papers we have counts for

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Showing 2002Show all

5 papers · 1 filter

gr-qc2002★ 104 cited

Polymer and Fock representations for a Scalar field

Abhay Ashtekar, Jerzy Lewandowski, Hanno Sahlmann

In loop quantum gravity, matter fields can have support only on the `polymer-like' excitations of quantum geometry, and their algebras of observables and Hilbert spaces of states c…

gr-qc2002★ 84 cited

Towards the QFT on Curved Spacetime Limit of QGR. II: A Concrete Implementation

Hanno Sahlmann, Thomas Thiemann

The present paper is the companion of [1] in which we proposed a scheme that tries to derive the Quantum Field Theory (QFT) on Curved Spacetimes (CST) limit from background indepen…

gr-qc2002★ 86 cited

Towards the QFT on Curved Spacetime Limit of QGR. I: A General Scheme

Hanno Sahlmann, Thomas Thiemann

In this article and a companion paper we address the question of how one might obtain the semiclassical limit of ordinary matter quantum fields (QFT) propagating on curved spacetim…

gr-qc2002★ 10 cited

When Do Measures on the Space of Connections Support the Triad Operators of Loop Quantum Gravity?

Hanno Sahlmann

In this work we investigate the question, under what conditions Hilbert spaces that are induced by measures on the space of generalized connections carry a representation of certai…

gr-qc2002★ 10 cited

Some results concerning the representation theory of the algebra underlying loop quantum gravity

Hanno Sahlmann

Important characteristics of the loop approach to quantum gravity are a specific choice of the algebra A of observables and of a representation of A on a measure space over the spa…