Primordial Fluctuations within Teleparallelism
  We study the cosmological perturbations for the possible inflation scenario
in the teleparallel equivalence of general relativity specified with
parallelizable topological conditions. By acquiring the identical physical
observables to general relativity under the teleparallel formalism, we perform
a 3+1 decomposition of the vierbein field, which can be interpreted as the time
gauge fixing between coordinate and tangent frames. We also extend our
discussion to the higher-order action, $f(T)$ gravity.
