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          "country": "Netherlands", 
          "value": "Van Swinderen Institute, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, the Netherlands"
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      ], 
      "surname": "Mazumdar", 
      "given_names": "Anupam", 
      "full_name": "Mazumdar, Anupam"
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    {
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        {
          "country": "Netherlands", 
          "value": "Van Swinderen Institute, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, the Netherlands"
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      "surname": "Stettinger", 
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      "full_name": "Stettinger, Georg", 
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  "titles": [
    {
      "source": "Elsevier", 
      "title": "New massless and massive infinite derivative gravity in three dimensions"
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    {
      "primary": "Nuclear Physics B"
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      "source": "Elsevier", 
      "value": "In this paper we will consider the most general quadratic curvature action with infinitely many covariant derivatives of massless gravity in three spacetime dimensions. The action is parity invariant and torsion-free and contains the same off-shell degrees of freedom as the Einstein-Hilbert action in general relativity. In the ultraviolet, with an appropriate choice of the propagator given by the exponential of an entire function, the point-like curvature singularity can be smoothened to a Gaussian distribution, while in the infrared the theory reduces to general relativity. We will also show how to embed new massive gravity in ghost-free infinite derivative gravity in Minkowski background as one of the infrared limits. Finally, we will provide the tree-level unitarity conditions for infinite derivative gravity in presence of a cosmological constant in deSitter and Anti-deSitter spacetimes in three dimensions by perturbing the geometries."
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