5 papers
Bound States in Scalar Theory with Fourth-order Derivative Term
Ichiro Oda
We consider a problem whether bound states are made in a scalar theory with a fourth-order derivative term or not. After rewriting the theory to a standard scalar theory with secon…
Emergence of General Relativity from Cosmological Constant Via Ghost Condensation
Ichiro Oda
We show that starting with a cosmological constant in a curved space-time, the Einstein-Hilbert term of general relativity is generated through a ghost condensation. We fix Weyl sy…
Vanishing Metric Commutation Relation and Higher-derivative De Donder Gauge in Quadratic Gravity
Ichiro Oda
We show that the equal-time commutation relations (ETCRs) among the time derivatives of the metric tensor identically vanish in the higher-derivative de Donder gauge as well as the…
Manifestly Covariant Canonical Formalism of Quadratic Gravity
Ichiro Oda
We present the manifestly covariant quantization of quadratic gravity or higher-derivative gravity in the de Donder gauge condition (or harmonic gauge condition) for general coordi…
BRST Formalism of Gravity
Ichiro Oda
We perform the manifestly covariant quantization of gravity in the de Donder gauge condition (or harmonic gauge condition) for general coordinate invariance. We explicitly c…