Jackson R. Fliss
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Matrix Quantum Mechanics and Entanglement Entropy: A Review Open
We review aspects of entanglement entropy in the quantum mechanics of N×N matrices, i.e., matrix quantum mechanics (MQM), at large N. In doing so, we review standard models of MQM and their relation to string theory, D-brane physics, and e…
How negative can null energy be in large N CFTs? Open
Smeared null energy has been shown to be bounded from below for free minimally coupled quantum field theories. This is not the case for conformally coupled free bosonic theories where states of unbounded null energy can be constructed by i…
Massive fields and Wilson spools in JT gravity Open
We give a prescription for minimally coupling massive matter to JT gravity with either sign of cosmological constant directly in its formulation as a topological BF theory. This coupling takes the form of a ‘Wilson spool,’ originally intro…
Entanglement in BF theory. Part II. Edge-modes Open
A bstract We consider the entanglement entropy arising from edge-modes in Abelian p -form topological field theories in d dimensions on arbitrary spatial topology and across arbitrary entangling surfaces. We find a series of descending are…
A spool for every quotient: One-loop partition functions in AdS$_3$ gravity Open
The Wilson spool is a prescription for expressing one-loop determinants as topological line operators in three-dimensional gravity. We extend this program to describe massive spinning fields on all smooth, cusp-free, solutions of Euclidean…
Entanglement in BF theory. Part I. Essential topological entanglement Open
A bstract We study the entanglement structure of Abelian topological order described by p -form BF theory in arbitrary dimensions. We do so directly in the low-energy topological quantum field theory by considering the algebra of topologic…
How negative can null energy be in large N CFTs? Open
Smeared null energy has been shown to be bounded from below for free minimally coupled quantum field theories. This is not the case for conformally coupled free bosonic theories where states of unbounded null energy can be constructed by i…
Spinning up the spool: massive spinning fields in 3d quantum gravity Open
We show how to incorporate massive spinning fields into the Euclidean path integral of three-dimensional quantum gravity via its Chern–Simons formulation. The coupling of the spinning fields to gravity is captured by a Wilson spool, a coll…
Spinning up the spool: Massive spinning fields in 3d quantum gravity Open
We show how to incorporate massive spinning fields into the Euclidean path integral of three-dimensional quantum gravity via its Chern-Simons formulation. The coupling of the spinning fields to gravity is captured by a Wilson spool, a coll…
Non-minimal coupling, negative null energy, and effective field theory Open
The non-minimal coupling of scalar fields to gravity has been claimed to violate energy conditions, leading to exotic phenomena such as traversable wormholes, even in classical theories. In this work we adopt the view that the non-minimal …
Report on scipost_202311_00040v1 Open
The non-minimal coupling of scalar fields to gravity has been claimed to violate energy conditions, leading to exotic phenomena such as traversable wormholes, even in classical theories.In this work we adopt the view that the non-minimal c…
Report on scipost_202311_00040v1 Open
The non-minimal coupling of scalar fields to gravity has been claimed to violate energy conditions, leading to exotic phenomena such as traversable wormholes, even in classical theories.In this work we adopt the view that the non-minimal c…
A 3d perspective on de Sitter quantum field theory Open
A basic introduction to scalar field theory in de Sitter spacetime is presented. The focus of this presentation takes place in three-dimensions. I will review the representation theory of $SO(1,3)$, the isometry group of three-dimensional …
Entanglement in BF theory II: Edge-modes Open
We consider the entanglement entropy arising from edge-modes in Abelian $p$-form topological field theories in $d$ dimensions on arbitrary spatial topology and across arbitrary entangling surfaces. We find a series of descending area laws …
Coupling Fields to 3D Quantum Gravity via Chern-Simons Theory Open
We propose a mechanism that couples matter fields to three-dimensional quantum gravity, which can be used for theories with a positive or negative cosmological constant. Our proposal is rooted in the Chern-Simons formulation of three-dimen…
Non-minimal coupling, negative null energy, and effective field theory Open
The non-minimal coupling of scalar fields to gravity has been claimed to violate energy conditions, leading to exotic phenomena such as traversable wormholes, even in classical theories. In this work we adopt the view that the non-minimal …
Entanglement in BF theory I: Essential topological entanglement Open
We study the entanglement structure of Abelian topological order described by $p$-form BF theory in arbitrary dimensions. We do so directly in the low-energy topological quantum field theory by considering the algebra of topological surfac…
Coupling Fields to 3D Quantum Gravity via Chern-Simons Theory Open
We propose a mechanism that couples matter fields to three-dimensional quantum gravity, which can be used for theories with a positive or negative cosmological constant. Our proposal is rooted in the Chern-Simons formulation of three-dimen…
The double smeared null energy condition Open
The null energy condition (NEC), an important assumption of the Penrose singularity theorem, is violated by quantum fields. The natural generalization of the NEC in quantum field theory, the renormalized null energy averaged over a finite …
Keeping matter in the loop in dS$_3$ quantum gravity Open
We propose a mechanism that couples matter fields to three-dimensional de Sitter quantum gravity. Our construction is based on the Chern-Simons formulation of three-dimensional Euclidean gravity, and it centers on a collection of Wilson lo…
Report on scipost_202202_00025v1 Open
The null energy condition (NEC), an important assumption of the Penrose singularity theorem, is violated by quantum fields.The natural generalization of the NEC in quantum field theory, the renormalized null energy averaged over a finite n…
Report on scipost_202202_00025v1 Open
The null energy condition (NEC), an important assumption of the Penrose singularity theorem, is violated by quantum fields.The natural generalization of the NEC in quantum field theory, the renormalized null energy averaged over a finite n…
Semi-local Bounds on Null Energy in QFT Open
We investigate whether the null energy, averaged over some region of spacetime, is bounded below in QFT. First, we use light-sheet quantization to prove a version of the ``Smeared Null Energy Condition" (SNEC) proposed in [1], applicable f…
The double smeared null energy condition Open
The null energy condition (NEC), an important assumption of the Penrose singularity theorem, is violated by quantum fields. The natural generalization of the NEC in quantum field theory, the renormalized null energy averaged over a finite …
Entanglement in the quantum Hall fluid of dipoles Open
We revisit a model for gapped fractonic order in (2+1) dimensions (a symmetric-traceless tensor gauge theory with conservation of dipole and trace-quadrupole moments described in \cite{Prem:2017kxc}) and compute its ground-state entangleme…
Semi-local Bounds on Null Energy in QFT Open
We investigate whether the null energy, averaged over some region of spacetime, is bounded below in QFT. First, we use light-sheet quantization to prove a version of the "Smeared Null Energy Condition" (SNEC) proposed in [1], applicable fo…
Report on scipost_202107_00003v2 Open
We revisit a model for gapped fractonic order in (2+1) dimensions (a symmetrictraceless tensor gauge theory with conservation of dipole and trace-quadrupole moments described in [1]) and compute its ground-state entanglement entropy on R 2…