Browsing by Subject "Effective Field Theories"

Browsing by Subject "Effective Field Theories"

Sort by: Order: Results:

  • ANEC on stress-tensor states in perturbative λ ϕ 4 theory 
    Bautista, Teresa; Casarin, Lorenzo (Berlin ; Heidelberg : Springer ; [Trieste] : SISSA, 2023)
    We evaluate the Average Null Energy Condition (ANEC) on momentum eigenstates generated by the stress tensor in perturbative λ ϕ4 and general spacetime dimension. We first compute the norm of the stress-tensor state at ...
  • 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 ...
  • Nicolai maps with four-fermion interactions 
    Casarin, Lorenzo; Lechtenfeld, Olaf; Rupprecht, Maximilian (Berlin ; Heidelberg : Springer, 2023)
    Nicolai maps offer an alternative description of supersymmetric theories via nonlinear and nonlocal transformations characterized by the so-called ‘free-action’ and ‘determinant-matching’ conditions. The latter expresses ...
  • Non-unitary evolution in the general extended EFT of inflation & excited initial states 
    Ashoorioon, Amjad (Berlin : Springer, 2018)
    I study the general case that arises in the Extended Effective Field Theory of Inflation (gEEFToI), in which the coefficients of the sixth order polynomial dispersion relation depend on the physical wavelength of the ...