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We generalize the idea of Vassiliev invariants to the spin network context, with the aim of using these invariants as a kinematical arena for a canonical quantization of gravity. This paper presents a detailed construction of these…

General Relativity and Quantum Cosmology · Physics 2009-10-31 Cayetano Di Bartolo , Rodolfo Gambini , Jorge Griego , Jorge Pullin

We show that Vassiliev invariants of knots, appropriately generalized to the spin network context, are loop differentiable in spite of being diffeomorphism invariant. This opens the possibility of defining rigorously the constraints of…

General Relativity and Quantum Cosmology · Physics 2009-10-31 Rodolfo Gambini , Jorge Griego , Jorge Pullin

We present a quantization of the Hamiltonian and diffeomorphism constraint of canonical quantum gravity in the spin network representation. The novelty consists in considering a space of wavefunctions based on the Vassiliev knot invariants.…

General Relativity and Quantum Cosmology · Physics 2014-11-17 C. Di Bartolo , R. Gambini , J. Griego , J. Pullin

Relativistic spin networks are defined by considering the spin covering of the group SO(4), SU(2) times SU(2). Relativistic quantum spins are related to the geometry of the 2-dimensional faces of a 4-simplex. This extends the idea of…

General Relativity and Quantum Cosmology · Physics 2009-10-30 John W. Barrett , Louis Crane

Spin networks are natural generalization of Wilson loops functionals. They have been extensively studied in the case where the gauge group is compact and it has been shown that they naturally form a basis of gauge invariant observables.…

High Energy Physics - Theory · Physics 2015-06-26 Laurent Freidel , Etera R. Livine

The objective of this work is twofold. On one hand, it is intended as a short introduction to spin networks and invariants of 3-manifolds. It covers the main areas needed to have a first understanding of the topics involved in the…

High Energy Physics - Theory · Physics 2012-06-18 Hans-Christian Ruiz

Spin network technique is usually generalized to relativistic case by changing $SO(4)$ group -- Euclidean counterpart of the Lorentz group -- to its universal spin covering $SU(2)\times SU(2)$, or by using the representations of $SO(3,1)$…

General Relativity and Quantum Cosmology · Physics 2024-06-06 M. V. Altaisky

We study the invariants of spin networks embedded in a three-dimensional manifold which are based on the path integral for SU(2) BF-Theory. These invariants appear naturally in Loop Quantum Gravity, and have been defined as spin-foam state…

General Relativity and Quantum Cosmology · Physics 2017-05-23 João Faria Martins , Aleksandar Mikovic

We present an explicit expression for the topological invariants associated to $SU(2)$ monopoles in the fundamental representation on spin four-manifolds. The computation of these invariants is based on the analysis of their corresponding…

High Energy Physics - Theory · Physics 2009-10-28 J. M. F. Labastida , M. Mariño

In a companion paper we introduced a kinematical arena for the discussion of the constraints of canonical quantum gravity in the spin network representation based on Vassiliev invariants. In this paper we introduce the Hamiltonian…

General Relativity and Quantum Cosmology · Physics 2009-10-31 Cayetano Di Bartolo , Rodolfo Gambini , Jorge Griego , Jorge Pullin

Three dimensional SU(2) Chern-Simons theory has been studied as a topological field theory to provide a field theoretic description of knots and links in three dimensions. A systematic method has been developed to obtain the link-invariants…

High Energy Physics - Theory · Physics 2009-10-22 R. K. Kaul , T. R. Govindarajan

We use the Chern-Simons quantum field theory in order to prove a recently conjectured limitation on the 1/K expansion of the Jones polynomial of a knot and its relation to the Alexander polynomial. This limitation allows us to derive a…

High Energy Physics - Theory · Physics 2009-10-28 Lev Rozansky

Invariant polynomials for torus links are obtained in the framework of the Chern-Simons topological gauge theory. The polynomials are computed as vacuum expectation values on the three-sphere of Wilson line operators representing the…

High Energy Physics - Theory · Physics 2009-10-22 J. M. Isidro , J. M. F. Labastida , A. V. Ramallo

The discrete picture of geometry arising from the loop representation of quantum gravity can be extended by a quantum deformation. The operators for area and volume defined in the q-deformation of the theory are partly diagonalized. The…

General Relativity and Quantum Cosmology · Physics 2009-10-28 Roumen Borissov , Seth Major , Lee Smolin

We define supersymmetric spin networks, which provide a complete set of gauge invariant states for supergravity and supersymmetric gauge theories. The particular case of Osp(1/2) is studied in detail and applied to the non-perturbative…

High Energy Physics - Theory · Physics 2009-10-31 Yi Ling , Lee Smolin

The general structure of the perturbative expansion of the vacuum expectation value of a Wilson line operator in Chern-Simons gauge field theory is analyzed. The expansion is organized according to the independent group structures that…

q-alg · Mathematics 2014-11-18 M. Alvarez , J. M. F. Labastida

In this work, we extend the so-called typicality approach, originally formulated in statistical mechanics contexts, to $SU(2)$-invariant spin-network states. Our results do not depend on the physical interpretation of the spin network;…

General Relativity and Quantum Cosmology · Physics 2016-11-02 Fabio Anzà , Goffredo Chirco

Spin networks are at the core of quantum gravity. Our aim is to plug the mathematical community at large into the procedures turn to create a finite quantum theory of general relativity. For this, because of the different cultural…

Differential Geometry · Mathematics 2007-05-23 Andrei Tyurin

We introduce a new basis on the state space of non-perturbative quantum gravity. The states of this basis are linearly independent, are well defined in both the loop representation and the connection representation, and are labeled by a…

General Relativity and Quantum Cosmology · Physics 2009-10-28 Carlo Rovelli , Lee Smolin

At any order, the perturbative expansion of the expectation values of Wilson lines in Chern-Simons theory gives certain integral expressions. We show that they all lead to knot invariants. Moreover these are finite type invariants whose…

q-alg · Mathematics 2009-10-30 Daniel Altschuler , Laurent Freidel
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