-
Mass-gap for black hole formation in higher derivative and ghost free gravity
We study a spherical gravitational collapse of a small mass in higher derivative and ghost free theories of gravity. By boosting a solution of linearized equations for a static point mass in such theories we obtain in the Penros ... Read More >
-
Limiting two-Higgs-doublet models
Updating various theoretical and experimental constraints on the four different types of two-Higgs-doublet models (2HDMs), we find that only the "lepton-specific" (or "type X") 2HDM can explain the present muon (g-2) anomaly in ... Read More >
-
Pursuit and Synchronization in Hydrodynamic Dipoles
We study theoretically the behavior of a class of hydrodynamic dipoles. This study is motivated by recent experiments on synthetic and biological swimmers in microfluidic \textit{Hele-Shaw} type geometries. Under such confinemen ... Read More >
-
Six New Mechanics corresponding to further Shape Theories
A suite of relational notions of shape are presented at the level of configuration space geometry, with corresponding new theories of shape mechanics and shape statistics. These further generalize two quite well known examples: ... Read More >
-
Synchronization in interacting Scale Free Networks
We study the fluctuations of the interface, in the steady state, of the Surface Relaxation Model (SRM) in two scale free interacting networks where a fraction $q$ of nodes in both networks interact one to one through external co ... Read More >
-
Non-linear energy conservation theorem in the framework of Special Relativity
In this work we revisit the study of the gravitational interaction in the context of the Special Theory of Relativity. It is found that, as long as the equivalence principle is respected, a relativistic non-linear energy conserv ... Read More >
-
Ultrafast pulse generation with black phosphorus
Black phosphorus has been recently rediscovered as a new and interesting two-dimensional material due to its unique electronic and optical properties. Here, we study the linear and nonlinear optical properties of black phosphoru ... Read More >
-
Drawing the Free Rigid Body Dynamics According to Jacobi
Guided by the Jacobi's work published the year before his death about the rotation of a rigid body, the behavior of the rotation matrix describing the dynamics of the free rigid body is studied. To illustrate this dynamics one d ... Read More >
-
Observation of Rapid Change of Crystalline Structure during the Phase Transition ...
We performed an X-ray diffraction experiment while palladium bulk absorbed and desorbed hydrogen to investigate the behavior of the crystalline lattice during the phase transition between the $\alpha$ phase and $\beta$ phase. Fa ... Read More >
-
Semiconducting graphene from highly ordered substrate interactions
While numerous methods have been proposed to produce semiconducting graphene, a significant bandgap has never been demonstrated. The reason is that, regardless of the theoretical gap formation mechanism, disorder at the sub-nano ... Read More >