115 citations · 707 across the 84 of their papers we have counts for
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Chiral primary cubic interactions from pp-wave supergravity
Youngjai Kiem, Yoonbai Kim, Jaemo Park +1
We explicitly construct cubic interaction light-cone Hamiltonian for the chiral primary system involving the metric fields and the self-dual four-form fields in the IIB pp-wave sup…
PP-wave/Yang-Mills Correspondence: An Explicit Check
Youngjai Kiem, Yoonbai Kim, Sangmin Lee +1
We present an explicit evidence that shows the correspondence between the type IIB supergravity in the pp-wave background and its dual supersymmetric Yang-Mills theory at the inter…
One-loop Noncommutative U(1) Gauge Theory from Bosonic Worldline Approach
Youngjai Kiem, Yeonjung Kim, Cheol Ryou +1
We develop a method to compute the one-loop effective action of noncommutative U(1) gauge theory based on the bosonic worldline formalism, and derive compact expressions for N-poin…
Interacting Open Wilson Lines in Noncommutative Field Theories
Y. Kiem, S. Lee, S. -J. Rey +1
In noncommutative field theories, it was known that one-loop effective action describes propagation of non-interacting open Wilson lines, obeying the flying dipole's relation. We s…
Anatomy of Two-Loop Effective Action in Noncommutative Field Theories
Y. Kiem, S. -S. Kim, S. -J. Rey +1
We compute, at two-loop order, one-particle-irreducible Green functions and effective action in noncommutative -theory for both planar (g=0, h=3) and nonplanar (g=1,…
Anatomy of One-Loop Effective Action in Noncommutative Scalar Field Theories
Youngjai Kiem, Soo-Jong Rey, Haru-Tada Sato +1
One-loop effective action of noncommutative scalar field theory with cubic self-interaction is studied. Utilizing worldline formulation, both planar and nonplanar part of the effec…
Open Wilson Lines and Generalized Star Product in Noncommutative Scalar Field Theories
Y. Kiem, S. -J. Rey, H. -T. Sato +1
Open Wilson line operators and generalized star product have been studied extensively in noncommutative gauge theories. We show that they also show up in noncommutative scalar fiel…
Noncommutative Q-balls
Youngjai Kiem, Chanju Kim, Yoonbai Kim
We obtain Q-ball solutions in noncommutative scalar field theory with a global U(1) invariance. The Q-ball solutions are shown to be classically and quantum mechanically stable. We…
Path integral formulation of Hodge duality on the brane
Sang-Ok Hahn, Youngjai Kiem, Yoonbai Kim +1
In the warped compactification with a single Randall-Sundrum brane, a puzzling claim has been made that scalar fields can be bound to the brane but their Hodge dual higher-rank ant…
Factorization and generalized *-products
Youngjai Kiem, Dong Hyun Park, Sangmin Lee
The generalized *-products, or the -products, appear both in the one-loop effective action of noncommutative Yang-Mills theories and in the coupling of a closed string to N op…
Open string derivation of winding states in thermal noncommutative field theories
Youngjai Kiem, Dong Hyun Park, Haru-Tada Sato
The `winding state' behavior appears in the two-loop nonplanar contribution to the partition function in thermal noncommutative field theories. We derive this feature directly from…
Stretched strings and worldsheets with a handle
Youngjai Kiem, Dong Hyun Park, Haru-Tada Sato
In the presence of the constant background NS two-form gauge field, we construct the worldsheet partition functions, bulk propagators and boundary propagators for the worldsheets w…
Noncommutative Field Theory from String Theory: Two-loop Analysis
Youngjai Kiem, Sangmin Lee, Jaemo Park
Noncommutative ϕ^3 field theory in six dimensions exhibits the logarithmic UV/IR mixing at the two-loop order. We show that open string theory in the presence of constant backgroun…
UV/IR Mixing in Noncommutative Field Theory via Open String Loops
Youngjai Kiem, Sangmin Lee
We explicitly evaluate one-loop (annulus) planar and nonplanar open string amplitudes in the presence of the background NS-NS two-form field. In the decoupling limit of Seiberg and…
Closed Strings Interacting with Noncommutative D-branes
Seungjoon Hyun, Youngjai Kiem, Sangmin Lee +1
Closed string dynamics in the presence of noncommutative Dp-branes is investigated. In particular, we compute bulk closed string two-point scattering amplitudes; the bulk space-tim…
Supersymmetric completion of supersymmetric quantum mechanics
Seungjoon Hyun, Youngjai Kiem, Hyeonjoon Shin
Via supersymmetry argument, we determine the effective action of the SU(2) supersymmetric Yang-Mills quantum mechanics up to two constants, which results from the full supersymmetr…
Eleven-dimensional massless superparticles and matrix theory spin-orbit couplings revisited
Seungjoon Hyun, Youngjai Kiem, Hyeonjoon Shin
The classical probe dynamics of the eleven-dimensional massless superparticles in the background geometry produced by N source M-momenta is investigated in the framework of N-secto…
Non-perturbative membrane spin-orbit couplings in M/IIA theory
Seungjoon Hyun, Youngjai Kiem, Hyeonjoon Shin
Membrane source-probe dynamics is investigated in the framework of the finite N-sector DLCQ M theory compactified on a transverse two-torus for an arbitrary size of the longitudina…
BTZ black holes from the five-dimensional general relativity with a negative cosmological constant
Youngjai Kiem, Dahl Park
We show that the five-dimensional general relativity with a negative cosmological constant allows the solutions of the form M_3 \times M_g where M_3 is the three-dimensional BTZ bl…
A Non-perturbative Evidence toward the Positive Energy Conjecture for asymptotically locally AdS_5 IIB Supergravity on S^5
Youngjai Kiem, Dahl Park
We consider the classical solution of the type IIB supergravity spontaneously compactified on S^5, whose metric depends only on the radial coordinate and whose asymptotic geometry…
Effective Action for Membrane Dynamics in DLCQ theory on a Two-torus
Seungjoon Hyun, Youngjai Kiem, Hyeonjoon Shin
The effective action for the membrane dynamics on the background geometry of the -sector DLCQ theory compactified on a two-torus is computed via supergravity. We compare it…
Thermodynamics of doubly charged CGHS model and D1-D5-KK black holes of IIB supergravity
Youngjai Kiem, Chang-Yeong Lee, Dahl Park
We study the doubly charged Callan-Giddings-Harvey-Strominger (CGHS) model, which has black hole solutions that were found to be U-dual to the D1-D5-KK black holes of the IIB super…
Background geometry of DLCQ M theory on a p-torus and holography
Seungjoon Hyun, Youngjai Kiem
Via supergravity, we argue that the infinite Lorentz boost along the M theory circle a la Seiberg toward the DLCQ M theory compactified on a p-torus (p<5) implies the holographic d…
Infinite Lorentz boost along the M-theory circle and non-asymptotically flat solutions in supergravities
Seungjoon Hyun, Youngjai Kiem, Hyeonjoon Shin
Certain non-asymptotically flat but supersymmetric classical solution of the type IIA supergravity can be interpreted as the infinitely-boosted version of the D-particle solution a…