39 research outputs found
On Wilson Surfaces in Topological Chern-Simons Interaction in (3+1) Dimensions
We comment on the regularization of the expectation values of Wilson surfaces
for the bosonic string in the (3+1) dimensions. We analyze the singular
behaviors of propagator for the Chern-Simons action with the additional higher
order terms.Comment: 9 pages, phyzzx.te
Composite Operators and Topological Contributions in Gauge Theory
In -dimensional gauge theory with a kinetic term based on the p-form
tensor gauge field, we introduce a gauge invariant operator associated with the
composite formed from a electric -brane and a magnetic -brane in
spacetime dimensions. By evaluating the partition function for this
operator, we show that the expectation value of this operator gives rise to the
topological contributions identical to those in gauge theory with a topological
Chern-Simons BF term.Comment: 8 pages, Latex fil
Dark Energy and Dark Matter in Emergent Gravity
We suggest that dark energy and dark matter may be a cosmic ouroboros of
quantum gravity due to the coherent vacuum structure of spacetime. We apply the
emergent gravity to a large matrix model by considering the vacuum in the
noncommutative (NC) Coulomb branch satisfying the Heisenberg algebra. We
observe that UV fluctuations in the NC Coulomb branch are always paired with IR
fluctuations and these UV/IR fluctuations can be extended to macroscopic
scales. We show that space-like fluctuations give rise to the repulsive
gravitational force while time-like fluctuations generate the attractive
gravitational force. When considering the fact that the fluctuations are random
in nature and we are living in the (3+1)-dimensional spacetime, the ratio of
the repulsive and attractive components will end in and this ratio curiously coincides with the dark composition
of our current Universe. If one includes ordinary matters which act as the
attractive force, the emergent gravity may explain the dark sector of our
Universe more precisely.Comment: v3; two appendices and references are added, 20 page