Results 51 to 60 of about 704,837 (230)
Quantum spin dynamics (QSD) V: Quantum Gravity as the natural regulator of the Hamiltonian constraint of matter quantum field theories [PDF]
, 1998 It is an old speculation in physics that, once the gravitational field is successfully quantized, it should serve as the natural regulator of infrared and ultraviolet singularities that plague quantum field theories in a background metric. We demonstrate
T. Thiemann
semanticscholar +2 more sources
Purely transmitting integrable defects [PDF]
, 2006 Some aspects of integrable field theories possessing purely transmitting defects are described. The main example is the sine-Gordon model and several striking features of a classical field theory containing one or more defects are pointed out.
A.C. Scott +10 more
core +3 more sources
Pilot-wave theory and quantum fields
, 2010 Pilot-wave theories provide possible solutions to the measurement problem. In such theories, quantum systems are not only described by the state vector, but also by some additional variables.
Struyve, Ward
core +1 more source
Quantum Reference Frames via Transition Amplitudes in Timeless Quantum Gravity [PDF]
, 2018 We propose an algorithm of extracting Schr\"odinger theories under all viable physical time from the Einstein-Hilbert path integral, formulated as the timeless transition amplitudes $\hat{\mathbb{P}}:\mathbb{K} \to \mathbb{K}^*$ between the boundary ...
Lewandowski, Jerzy, Lin, Chun-Yen
core +1 more source
A new computational approach to lattice quantum field theories [PDF]
, 2008 Developments in algorithms over the past decade suggest that there is a new computational approach to a class of quantum field theories. This approach is b ased on rewriting the partition function in a representation similar to the world-line repr ...
S. Chandrasekharan
semanticscholar +1 more source
Quantum Algorithms for Simulating the Lattice Schwinger Model [PDF]
Quantum, 2020 The Schwinger model (quantum electrodynamics in 1+1 dimensions) is a testbed for the study of quantum gauge field theories. We give scalable, explicit digital quantum algorithms to simulate the lattice Schwinger model in both NISQ and fault-tolerant ...
Alexander F. Shaw +3 more
semanticscholar +1 more source
Universally finite gravitational and gauge theories
Nuclear Physics B, 2015 It is well known that standard gauge theories are renormalizable in D=4 while Einstein gravity is renormalizable in D=2. This is where the research in the field of two derivatives theories is currently standing.
Leonardo Modesto, Lesław Rachwał
doaj +1 more source
Exotic $\mathbb{Z}_N$ symmetries, duality, and fractons in 3+1-dimensional quantum field theory
SciPost Physics, 2021 Following our earlier analyses of nonstandard continuum quantum field theories, we study here gapped systems in 3+1 dimensions, which exhibit fractonic behavior.
Nathan Seiberg, Shu-Heng Shao
doaj +1 more source
A novel connection between scalar field theories and quantum mechanics
, 2018 This work deals with scalar field theories and supersymmetric quantum mechanics. The investigation is inspired by a recent result, which shows how to use the reconstruction mechanism to describe two distinct field theories from the very same quantum ...
Bazeia, D., Losano, L.
core +1 more source
Noncommutative Deformations of Wightman Quantum Field Theories [PDF]
, 2008 Quantum field theories on noncommutative Minkowski space are studied in a model-independent setting by treating the noncommutativity as a deformation of quantum field theories on commutative space.
H. Grosse, Gandalf Lechner
semanticscholar +1 more source