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When quantizing conformal dilaton gravity, there is a conformal anomaly which starts at two-loop order. This anomaly stems from evanescent operators on the divergent parts of the effective action. The general form of the finite counterterm, whic[...]texto impreso
The symmetries of unimodular gravity are clarified somewhat.texto impreso
Álvarez, Enrique ; González Martín, Sergio ; Herrero Valea, Mario ; Pérez Martín, Carmelo | Springer | 2015-08The problem of the comological constant appears in a new light in Unimodular Gravity. In particular, the zero momentum piece of the potential (that is, the constant piece independent of the matter fields) does not automatically produce a cosmolo[...]texto impreso
Álvarez, Enrique ; González Martín, Sergio ; Herrero Valea, Mario ; Pérez Martín, Carmelo | American Physical Society | 2015-09-15It is well known that the problem of the cosmological constant appears in a new light in unimodular gravity. In particular, the zero-momentum piece of the potential does not automatically produce a corresponding cosmological constant. Here we sh[...]texto impreso
The maximally helicity violating tree-level scattering amplitudes involving three, four or five gravitons are worked out in Unimodular Gravity. They are found to coincide with the corresponding amplitudes in General Relativity. This a remarkable[...]
