9 papers
Singularities, Entropy and the Arrow of Time, {\it or} Is CRT a Gauge Symmetry in Quantum Gravity?
T. Banks
We examine the question of whether the discrete transformation CRT is a gauge symmetry of ``Quantum Gravity". Since the phrase in quotes is not yet completely well defined, we firs…
Diamonds in the Bulk and Large- Scaling in AdS/CFT
Sidan A, Tom Banks
Quantum Field Theory introduced us to the notion that a causal diamond in space-time corresponded to a subsystem of a quantum mechanical system defined on the global space-time. Wo…
On the Unitarity of the Gravitational S-Matrix in High Dimension
T. Banks
We argue that for finite energy windows, the final states in gravitational scattering in dimension are normalizable coherent states in Fock space. However, as the center of…
What is a Gravitational Path Integral? {\it or} Gravitational Path Integrals as Fluctuating Gravito-Hydrodynamics
T. Banks
We show how Gravitational Path Integral formulae for various quantities that have been computed in the literature, follow from a few coarse grained hydrodynamic assumptions about t…
Finite Entropy Implies Finite Dimension in Quantum Gravity
T. Banks
Quantum Field Theory (QFT) introduced us to the notion that a causal diamond in space-time corresponded to a subsystem of a quantum mechanical system defined on the global space-ti…
Note on Type Algebras in String Theory and Bulk Causal Diamonds
T. Banks
We argue that the Leutheusser-Liu procedure of isolating a von Neumann algebra in the limit of string theories, leads to the algebra of relativistic fermion fields on…