Integrable quantum field theories
Negative energy densities in integrable quantum field theories at one-particle level
... such integrable quantum field ...constructs quantum field localized in spacelike wedges (rather than at spacetime points), and uses these to abstractly obtain observables localized in ...
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Higher particle form factors of branch point twist fields in integrable quantum field theories
... In a series of recent works involving one of the present authors [24, 27, 28, 25] a new approach to the computation of (1.1) for 1+1-dimensional integrable quantum field theories (QFT) has ...
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Exact Form Factors in Integrable Quantum Field Theories: the Sine-Gordon Model
... In integrable quantum field theories there exist different types of bound state spectra which may be characterized by the absence or presence of solitons or ...in quantum field ...
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On vacuum energies and renomalizability in integrable quantum field theories
... conformal field theories the vacuum en- ergies by means of the thermodynamic Bethe ...conformal field theory in the ultraviolet, the vacuum energies exhibit different types of ...scalar field ...
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The ultraviolet behaviour of integrable quantum field theories, affine Toda field theory
... Toda field theories in which the underlying Lie algebra is simply laced (83) and which depends in a universal manner only on the rank of the algebra, its Coxeter number and the effective coupling ...
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On vacuum energies and renomalizability in integrable quantum field theories
... Permanent repository link: http://openaccess.city.ac.uk/13896/ Link to published version: http://dx.doi.org/10.1016/j.nuclphysb.2004.04.005 Copyright and reuse: City Research Online aims[r] ...
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Entanglement entropy in integrable quantum systems
... of Quantum Mechanics at the beginning of the 20 th century many questions have been posed by scientists and philosophers about its intrinsic nature and how it will affect the deterministic and accepted view of ...
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Applications of quantum integrable systems
... massive integrable quantum field theories an im- pressive amount of non-perturbative techniques has been developed during the last 25 ...such theories was to use the lower dimensional ...
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Supersymmetric integrable scattering theories with unstable particles
... in integrable quantum field theories in 1+1 dimensions as early as the late seventies [19], only recently such type of theories have been investigated in more ...of theories have ...
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Universal properties of the entanglement entropy in quantum integrable models
... on integrable quantum field ...of integrable theories allow for a simplification of the problem at hand, and in many cases for a direct analytic computation of the entanglement ...
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Form Factors for Integrable Lagrangian Field Theories, the Sinh-Gordon Model
... Once the S-matrix is known, it is possible to analyze the off-shell quantum field theory by considering the form-factors which are matrix elements of local operators O (x) between the asymptotic states. ...
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Entanglement entropy of non-unitary integrable quantum field theory
... In the present work we find the exact form factors of T and : T φ : up to three particles. Remarkably we find that the form factor equations together with the requirement of clustering are sufficient to entirely fix all ...
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Quantization of Integrable Systems and Four Dimensional Gauge Theories
... The quantum system and the gauge ...supersymmetric field theory realization of this system involves the six dimensional (2, 0) theory compactified on the Riemann surface ...
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Traintracks through Calabi-Yau Manifolds: Scattering Amplitudes beyond Elliptic Polylogarithms
... an integrable fishnet theory, within which (1) arises more ...all quantum field theories in four dimensions at sufficiently high loop order or ...
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Two dimensional gauge theories and quantum integrable systems
... The space of the solutions has a natural hyperk¨ ahler structure and admits compatible U (1) action. The correlation functions in the theory introduced in [1] can be described by the integrals of the products of U (1) × ...
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On a systematic approach to defects in classical integrable field theories
... in integrable systems has quite a rich literature, es- pecially for quantum aspects [1, 2, 3, 4, 6, 7, 8, 9], even if quite a lot remains to be ...of integrable defects in classical field ...
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The origins of Schwinger's Euclidean Green's functions
... for field theory which emphasized the impor- tance of the Euclidean region in ...of quantum field theories in terms of Euclidean Green’s functions, which have come to be known as Schwinger ...
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The split property for quantum field theories in flat and curved spacetimes
... Let us assume that a net of local von Neumann algebras, acting on a Hilbert space H , has been associated to this spacetime, and that the geometrical time-translation symmetry (t, σ ) 7→ (t + τ, σ ) is implemented by a ...
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Integrable scattering theories with unstable particles
... underlies theories with unstable particles and propose sev- eral new scattering ...concrete theories which involve un- stable particles, such as the homogeneous sine-Gordon models and their ...
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