Department of Physics, School of Applied Mathematical and Physical Sciences, National Technical University of Athens, Zografou Campus, 15780, Athens, Greece
2 Institute of Theoretical Physics, Faculty of Physics, University of Warsaw, Pasteura 5, 02-093, Warsaw, Poland
Accepted: 14 May 2023
Published online: 23 May 2023
Using arguments from holography we propose that the deviation of the cosmological spectral index of scalar fluctuations from unity may be controlled almost entirely by the critical exponent of the Ising model.
© The Author(s) 2023
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