Results 71 to 80 of about 704,837 (230)
Spin network setting of topological quantum computation
, 2004 The spin network simulator model represents a bridge between (generalised) circuit schemes for standard quantum computation and approaches based on notions from Topological Quantum Field Theories (TQFTs).
ANNALISA MARZUOLI +5 more
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Quantum Field Theory and the Standard Model [PDF]
Physics Today, 2014 44 pages, Lectures given at the 2009 European School of High-Energy Physics, Bautzen, Germany, 14-27 Jun ...
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Causality, Analyticity and an IR Obstruction to UV Completion [PDF]
, 2006 We argue that certain apparently consistent low-energy effective field theories described by local, Lorentz-invariant Lagrangians, secretly exhibit macroscopic non-locality and cannot be embedded in any UV theory whose S-matrix satisfies canonical ...
A. Nicolis +17 more
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From a microscopic inertial active matter model to the Schrödinger equation
Nature Communications, 2023 Active field theories are powerful tools to explain phenomena such as motility-induced phase separation. The authors report an active analogue to the quantum mechanics tunneling effect, showing similarity to the Schrödinger equation, by introducing an ...
Michael te Vrugt +4 more
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Zamolodchikov–Faddeev algebra and quantum quenches in integrable field theories [PDF]
, 2011 We analyze quantum quenches in integrable models and in particular we determine the initial state in the basis of eigenstates of the post-quench Hamiltonian. This leads us to consider the set of transformations of creation and annihilation operators that
S. Sotiriadis, D. Fioretto, G. Mussardo
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Quantum Fields on Noncommutative Spacetimes: Theory and Phenomenology
Symmetry, Integrability and Geometry: Methods and Applications, 2010 In the present work we review the twisted field construction of quantum field theory on noncommutative spacetimes based on twisted Poincaré invariance.
Aiyalam P. Balachandran +3 more
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Noncommutative Quantum Field Theories [PDF]
, 2003 We start by reviewing the formulation of noncommutative quantum mechanics as a constrained system. Then, we address to the problem of field theories defined on a noncommutative space-time manifold.
Girotti, H. O.
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Degenerate Perturbation Theory for Models of Quantum Field Theory with Symmetries
Annales Henri Poincaré, 2023 AbstractWe consider Hamiltonians of models describing non-relativistic quantum mechanical matter coupled to a relativistic field of bosons. If the free Hamiltonian has an eigenvalue, we show that this eigenvalue persists also for nonzero coupling. The eigenvalue of the free Hamiltonian may be degenerate provided there exists a symmetry group acting ...
Hasler, David, Lange, Markus
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On the representation of minimal form factors in integrable quantum field theory
Nuclear Physics BIn this paper, we propose a new representation of the minimal form factors in integrable quantum field theories. These are solutions of the two-particle form factor equations, which have no poles on the physical sheet.
Olalla A. Castro-Alvaredo +2 more
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General-relativistic quantum field theory: An exactly soluble model
Physical Review D, 1975 The massive scalar and Dirac fields quantized on a de Sitter background geometry prove to be exactly soluble models in general-relativistic field theory. The Feynman Green's function is computed for both the scalar and Dirac fields. A dimensional regularization procedure applied in coordinate space facilitates the calculation of their respective ...
Candelas, P, Raine, D
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