Auflistung Forschungsinitiativen nach Autor/in "ef5d4cf0-18c9-47ad-9b02-436380465bb4"

Auflistung Forschungsinitiativen nach Autor/in "ef5d4cf0-18c9-47ad-9b02-436380465bb4"

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  • Algebraic integrability of PT-deformed Calogero models 
    Correa, Francisco; Lechtenfeld, Olaf (Bristol : IOP Publ., 2021)
    We review some recents developments of the algebraic structures and spectral properties of non-Hermitian deformations of Calogero models. The behavior of such extensions is illustrated by the A2 trigonometric and the D3 ...
  • Construction method for the Nicolai map in supersymmetric Yang–Mills theories 
    Lechtenfeld, Olaf; Rupprecht, Maximilian (Amsterdam : North-Holland Publ., 2021)
    Recently, a universal formula for the Nicolai map in terms of a coupling flow functional differential operator was found. We present the full perturbative expansion of this operator in Yang–Mills theories where supersymmetry ...
  • Gribov horizon beyond the Landau gauge 
    Lavrov, Peter M.; Lechtenfeld, Olaf (Amsterdam [u.a.] : Elsevier, 2013)
    Gribov and Zwanziger proposed a modification of Yang-Mills theory in order to cure the Gribov copy problem. We employ field-dependent BRST transformations to generalize the Gribov-Zwanziger model from the Landau gauge to ...
  • Instability of cosmic Yang-Mills fields 
    Kumar, Kaushlendra; Lechtenfeld, Olaf; Picanço Costa, Gabriel (Amsterdam : North-Holland Publ. Co., 2021)
    There exists a small family of analytic SO(4)-invariant but time-dependent SU(2) Yang–Mills solutions in any conformally flat four-dimensional spacetime. These might play a role in early-universe cosmology for stabilizing ...
  • Integrability of supersymmetric Calogero–Moser models 
    Krivonos, Sergey; Lechtenfeld, Olaf; Sutulin, Anton (Amsterdam : North-Holland Publ., 2022)
    We analyze the integrability of the -extended supersymmetric Calogero–Moser model. We explicitly construct the Lax pair for this system, which properly reproduces all equations of motion. After adding a supersymmetric ...
  • Integrability, intertwiners and non-linear algebras in Calogero models 
    Carrillo-Morales, Francisca; Correa, Francisco; Lechtenfeld, Olaf (Berlin ; Heidelberg : Springer, 2021)
    For the rational quantum Calogero systems of type A1⊕A2, AD3 and BC3, we explicitly present complete sets of independent conserved charges and their nonlinear algebras. Using intertwining (or shift) operators, we include ...
  • A low-energy limit of Yang-Mills theory on de Sitter space 
    Cork, Josh; Kutluk, Emine Şeyma; Lechtenfeld, Olaf; Popov, Alexander D. (Berlin ; Heidelberg : Springer, 2021)
    We consider Yang-Mills theory with a compact structure group G on four-dimensional de Sitter space dS4. Using conformal invariance, we transform the theory from dS4 to the finite cylinder I × S3, where I = (−π/2, π/2) and ...
  • On N=2 supersymmetric Ruijsenaars–Schneider models 
    Krivonos, Sergey; Lechtenfeld, Olaf (Amsterdam : North-Holland Publ., 2020)
    We construct an N=2 supersymmetric extension of n-particle Ruijsenaars–Schneider models. The guiding feature is a deformation of the phase space. The supercharges have a “free” form linear in the fermions but produce an ...
  • A perturbative expansion scheme for supermembrane and matrix theory 
    Lechtenfeld, Olaf; Nicolai, Hermann (Berlin, Heidelberg : Springer, 2022)
    We reconsider the supermembrane in a Minkowski background and in the light-cone gauge as a one-dimensional gauge theory of area preserving diffeomorphisms (APDs). Keeping the membrane tension T as an independent parameter ...
  • Perturbative linearization of supersymmetric Yang-Mills theory 
    Ananth, Sudarshan; Lechtenfeld, Olaf; Malcha, Hannes; Nicolai, Hermann; Pandey, Chetan; Pant, Saurabh (Berlin [u.a.] : Springer, 2020)
    Supersymmetric gauge theories are characterized by the existence of a transformation of the bosonic fields (Nicolai map) such that the Jacobi determinant of the transformation equals the product of the Matthews-Salam-Seiler ...
  • Universal form of the Nicolai map 
    Lechtenfeld, Olaf; Rupprecht, Maximilian (Ridge, NY : American Physical Society, 2021)
    The nonlocal bosonic theory obtained from integrating out all anticommuting and auxiliary variables in a globally supersymmetric theory is characterized by the Nicolai map. The latter is generated by a coupling flow ...
  • Yang–Mills solutions on Minkowski space via non-compact coset spaces 
    Kumar, Kaushlendra; Lechtenfeld, Olaf; Picanço Costa, Gabriel; Röhrig, Jona (Amsterdam : North-Holland Publ., 2022)
    We find a two-parameter family of solutions of the Yang–Mills equations for gauge group SO(1,3) on Minkowski space by foliating different parts of it with non-compact coset spaces with SO(1,3) isometry. The interior of the ...

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