ATSUSHI HIGUCHI'S HOMEPAGE
Atsushi Higuchi
I received a PhD in Physics from
Yale University
in 1987. My thesis advisor
was Feza Gürsey.
I was a postdoctoral research associate at
University of Wisconsin-Milwaukee,
University of Maryland at College Park,
University of Chicago and
University of Bern
before I moved to York in 1996.
Research Interests:
My main research interests are in
quantum field theory in connection with general relativity.
I have also worked on differential geometry and quantum entanglement.
My recent research activities (to be updated)
- proof that the absorption cross section for a certain scalar field by
a black hole is equal to the black-hole area in the zero-frequency limit;
- demonstration (with S S Kouris) of the fact that,
although the graviton two-point function, which measures correlation of
gravitational vacuum fluctuation between two spacetime points, is known to grow
at large "distances" in a cosmological spacetime called de Sitter spacetime,
its physical part is bounded
as a function of "distance";
- computation of low-energy photon absorption cross sections by black holes
(with L C B Crispino and G E A Matsas);
- investigation of properties of the so-called Hopf vector field on the
three-dimensional sphere (with B S Kay and C M Wood);
- generalization of a canonical form
for two-index tensors called the Schmidt decomposition
to tensors with more than two indices
(with H A Carteret and A Sudbery).
Click here
for a list of publications.
Teaching
I lecture on Calculus II (1st-year), Topics in Mathematical Physics (3rd-year)
and Introdution to Quantum Field Theory (4th-year). Material for these modules
can be found on Moodle.
Useful Links
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Page maintained by A Higuchi.