32 citations · 541 across the 84 of their papers we have counts for
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Morse theory in path space
Yong Seung Cho, Soon-Tae Hong
We consider the path space of a curved manifold on which a point particle is introduced in a conservative physical system with constant total energy to formulate its action functio…
Stringy Jacobi fields in Morse theory
Yong Seung Cho, Soon-Tae Hong
We consider the variation of the surface spanned by closed strings in a spacetime manifold. Using the Nambu-Goto string action, we induce the geodesic surface equation, the geodesi…
Warped products and the Reissner-Nordström-AdS black hole
Soon-Tae Hong, Jaedong Choi, Young-Jai Park
We study a multiply warped product manifold associated with the Reissner-Nordstrom-AdS metric to investigate the physical properties inside the black hole event horizons. Our resul…
Warped product approach to universe with non-smooth scale factor
Jaedong Choi, Soon-Tae Hong
In the framework of Lorentzian warped products, we study the Friedmann-Robertson-Walker cosmological model to investigate non-smooth curvatures associated with multiple discontinui…