Kosuke Ishikawa

collaborators

3 papers

hep-th2020

Vacuum energy of the supersymmetric $C P^{N - 1}$ model on $R \times S^{1}$ in the $1/ N$ expansion

Kosuke Ishikawa, Okuto Morikawa, Kazuya Shibata +1

By employing the $1/ N$ expansion, we compute the vacuum energy~ $E (δ ε)$ of the two-dimensional supersymmetric (SUSY) $C P^{N - 1}$ model on~ $R \times S^{1}$ with $\mathb…

hep-th2019

Renormalon structure in compactified spacetime

Kosuke Ishikawa, Okuto Morikawa, Kazuya Shibata +2

We point out that the location of renormalon singularities in theory on a circle-compactified spacetime $R^{d - 1} \times S^{1}$ (with a small radius $R Λ ≪ 1$ ) can differ fr…

hep-th2019

Infrared renormalon in the supersymmetric $C P^{N - 1}$ model on $R \times S^{1}$

Kosuke Ishikawa, Okuto Morikawa, Akira Nakayama +3

In the leading order of the large- $N$ approximation, we study the renormalon ambiguity in the gluon (or, more appropriately, photon) condensate in the 2D supersymmetric $\mathbb{C}…

Vacuum energy of the supersymmetric CPN−1 model on R×S1 in the 1/N expansion

Renormalon structure in compactified spacetime

Infrared renormalon in the supersymmetric CPN−1 model on R×S1

Vacuum energy of the supersymmetric $C P^{N - 1}$ model on $R \times S^{1}$ in the $1/ N$ expansion

Infrared renormalon in the supersymmetric $C P^{N - 1}$ model on $R \times S^{1}$