Dae-Yup Song

activity

19942016

most citedUnitary relation between a harmonic oscillator of time-dependent frequency and a simple harmonic oscillator with and without an inverse-square potential

40 citations · 278 across the 24 of their papers we have counts for

collaborators

Showing hep-thShow all

4 papers · 1 filter

hep-th1995

Critical curvature of large- $N$ nonlinear $O (N)$ sigma model on $S^{2}$

K. H. Kim, Dae-Yup Song

We study the nonlinear $O (N)$ sigma model on $S^{2}$ with the gravitational coupling term, by evaluating the effective potential in the large- $N$ limit. It is shown that there is a c…

hep-th1995

Phase transition by curvature in three dimensional $O (N)$ sigma model

Dae-Yup Song

Using the effective potential, the large- $N$ nonlinear $O (N)$ sigma model with the curvature coupled term is studied on $S^{2} \times R^{1}$ . We show that, for the conformally coupled c…

hep-th1994

S matrix of collective field theory

Dae-Yup Song

By applying the Lehmann-Symanzik-Zimmermann (LSZ) reduction formalism, we study the S matrix of collective field theory in which fermi energy is larger than the height of potential…

hep-th1994★ 1 cited

Large- $N$ nonlinear $σ$ models on $R^{2} \times S^{1}$

Dae Yup Song

The large- $N$ nonlinear $O (N)$ , $C P^{N - 1}$ $σ$ models are studied on $R^{2} \times S^{1}$ . The $N$ -components scalar fields of the models are supposed to acquire a phase $e^{i 2 π δ}$ $(0…

Critical curvature of large-N nonlinear O(N) sigma model on S2

Phase transition by curvature in three dimensional O(N) sigma model

S matrix of collective field theory

Large-N nonlinear σ models on R2×S1

Critical curvature of large- $N$ nonlinear $O (N)$ sigma model on $S^{2}$

Phase transition by curvature in three dimensional $O (N)$ sigma model

Large- $N$ nonlinear $σ$ models on $R^{2} \times S^{1}$