UTe2 is a promising candidate for spin-triplet superconductors, in which a
paramagnetic normal state becomes superconducting due to spin fluctuations. The
subsequent discovery of various unusual superconducting properties has promoted
the use of UTe2 as an exciting playground to study unconventional
superconductivity, but fathoming the normal state fermiology and its influence
on the superconductivity still requires further investigation. Here, we
theoretically show that electron correlation induces a dramatic change in the
normal state fermiology with an emergent correlated Fermi surface (FS) driven
by Kondo resonance at low temperatures. This emergent correlated FS can account
for various unconventional superconducting properties in a unified way. In
particular, the geometry of the correlated FS can naturally host topological
superconductivity in the presence of odd-parity pairings, which become the
leading instability due to strong ferromagnetic spin fluctuations. Moreover,
two pairs of odd-parity channels appear as accidentally degenerate solutions,
which can naturally explain the multicomponent superconductivity with broken
time-reversal symmetry. Interestingly, the resulting time-reversal breaking
superconducting state is a Weyl superconductor in which Weyl points migrate
along the correlated FS as the relative magnitude of nearly degenerate pairing
solutions varies. We believe that the correlated normal state fermiology we
discovered provides a unified platform to describe the unconventional
superconductivity in UTe2.Comment: 13 pages, 4 figures and 1 table in the main text, and 10 figures and
1 table in the Supplementary Informatio