activity
20152026
most citedPrimordial black holes from a cosmic phase transition: The collapse of Fermi-balls

149 citations · 414 across the 32 of their papers we have counts for

collaborators

41 papers

hep-th2026

Revisiting wormhole-induced global symmetry breaking

Kiyoharu Kawana

It is widely believed that global symmetries cannot exist in a consistent theory of quantum gravity. A prominent mechanism underlying this expectation is provided by gravitational…

cond-mat.soft2026

Loop expansion in polymer field theory: application to phase separation

Kiyoharu Kawana, Kyosuke Adachi

Liquid-liquid phase separation underlies phenomena ranging from protein condensate formation to the phase coexistence of synthetic polymers. Although the random phase approximation…

cond-mat.stat-mech2026

Variational Method for Interacting Surfaces with Higher-Form Global Symmetries

Kiyoharu Kawana

We develop a variational method for interacting surface systems with higher-form global symmetries. As a natural extension of the conventional second-quantized Hamiltonian of inter…

hep-th2025

Landau theory for lattice higher gauge theory and Kramers-Wannier duality

Kiyoharu Kawana

We derive a Landau field theory for a lattice higher gauge theory defined on -dimensional open cells (i.e., sites, links, faces, cubes, etc.), and study its continuum-limit and…

hep-th2025

Phases and propagation of closed p-brane

Kiyoharu Kawana

We study phases and propagation of closed -brane within the framework of effective field theory with higher-form global symmetries, i.e., {\it brane-field theory}. We extend our…

cond-mat.stat-mech2025

On Virial Expansion in Hard Sphere Model

Kiyoharu Kawana

Virial expansion is a traditional approach in statistical mechanics that expresses thermodynamic quantities, such as pressure , as power series of density or chemical potential.…