Jan 17 – 19, 2024
Porto - Portugal
Europe/Lisbon timezone

Gravity from optimized computation

Not scheduled
7m
Porto - Portugal

Porto - Portugal

Faculdade de Ciências da Universidade do Porto Rua do Campo Alegre Porto - Porto - Portugal

Speaker

RAFAEL CARMONA (Instituto de Física Teórica UAM-CSIC)

Description

A new principle in quantum gravity, dubbed spacetime complexity,
states that gravitational physics emerges from spacetime seeking to
optimize the computational cost of its quantum dynamics. Thus far,
this principle has been realized at the linearized level, in
holographic theories with Einstein gravity duals, assuming the
so-called 'Complexity-Volume' (CV) proposal. We expand on this proof
in two significant directions. First, we derive higher-derivative
gravitational equations by including appropriate corrections to the CV
dictionary. Second, we show semi-classical equations arise by
considering the leading bulk quantum corrections to CV. Our proof is
valid for two-dimensional dilaton gravities, where the problem of
semi-classical backreaction can be solved exactly.

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