123 citations · 189 across the 10 of their papers we have counts for
10 papers
Analysis of Parameterized Quantum Circuits: on The Connection Between Expressibility and Types of Quantum Gates
Yu Liu, Kentaro Baba, Kazuya Kaneko +3
Expressibility is a crucial factor of a Parameterized Quantum Circuit (PQC). In the context of Variational Quantum Algorithms (VQA) based Quantum Machine Learning (QML), a QML mode…
Linear Regression by Quantum Amplitude Estimation and its Extension to Convex Optimization
Kazuya Kaneko, Koichi Miyamoto, Naoyuki Takeda +1
Linear regression is a basic and widely-used methodology in data analysis. It is known that some quantum algorithms efficiently perform least squares linear regression of an expone…
Quantum Speedup of Monte Carlo Integration with respect to the Number of Dimensions and its Application to Finance
Kazuya Kaneko, Koichi Miyamoto, Naoyuki Takeda +1
Monte Carlo integration using quantum computers has been widely investigated, including applications to concrete problems. It is known that quantum algorithms based on quantum ampl…
Quantum Pricing with a Smile: Implementation of Local Volatility Model on Quantum Computer
Kazuya Kaneko, Koichi Miyamoto, Naoyuki Takeda +1
Applications of the quantum algorithm for Monte Carlo simulation to pricing of financial derivatives have been discussed in previous papers. However, up to now, the pricing model d…
Flavor structure, Higgs boson mass and dark matter in supersymmetric model with vector-like generations
Tetsutaro Higaki, Michinobu Nishida, Naoyuki Takeda
We study a supersymmetric model in which the Higgs mass, the muon anomalous magnetic moment and the dark matter are simultaneously explained with extra vector-like generation multi…
Cosmological relaxation and high scale inflation
Tetsutaro Higaki, Naoyuki Takeda, Yusuke Yamada
We study whether the relaxion mechanism solves the Higgs hierarchy problem against a high scale inflation or a high reheating temperature. To accomplish the mechanism, we consider…
Adiabatic Invariance of Oscillons/I-balls
Masahiro Kawasaki, Fuminobu Takahashi, Naoyuki Takeda
Real scalar fields are known to fragment into spatially localized and long-lived solitons called oscillons or -balls. We prove the adiabatic invariance of the oscillons/-ball…
Consistent generation of magnetic fields in axion inflation models
Tomohiro Fujita, Ryo Namba, Yuichiro Tada +2
There has been a growing evidence for the existence of magnetic fields in the extra-galactic regions, while the attempt to associate their origin with the inflationary epoch alone…
I-ball formation with logarithmic potential
Masahiro Kawasaki, Naoyuki Takeda
A coherently oscillating real scalar field with potential shallower than quadratic one fragments into spherical objects called I-balls. We study the I-ball formation for logarithmi…
Gravitational waves from smooth hybrid new infation
Masahiro Kawasaki, Ken'ichi Saikawa, Naoyuki Takeda
We calculate the production of the gravitational waves from a double inflation model with lattice simulations. Between the two inflationary stages, gravitational waves with a chara…