E. Chan-López

activity

20142026

most citedDynamics of a Rydberg hydrogen atom near a topologically insulating surface

10 citations · 16 across the 6 of their papers we have counts for

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math.DS2026

Reconstruction through a coisotropic reduction: the missing momentum on a Poincaré section as a branched covering

E. Chan-López

Determining the momentum missing on a Poincaré section of a two-degree-of-freedom Hamiltonian is usually posed as the root-finding problem $H (0, q_{2}, p_{1}, p_{2}) = E$ , which degenerates a…

math.DS2026

Newton geometry of Bogdanov-Takens degeneracies in integrable dilatonic models: invariant divisors and boundary multiplicity

E. Chan-López, A. Martín-Ruiz, J. M. Paulin Fuentes

The Kantowski--Sachs interior of Grumiller's two-dimensional dilaton gravity model reduces to $H ˙ = \frac{1}{2} (Λ - 3 H^{2} - u^{2}) + Q u$ , $u ˙ = - H u$ , where $H$ is the expansion rate of the…

math.DS2026

The Bogdanov--Takens normal-form coefficients in $R^{n}$ as directional derivatives of the characteristic invariants

E. Chan-López

Let $X$ be a vector field on an open set of $R^{n}$ with $X (p) = 0$ and Jacobian $J = D X (p)$ of rank $n - 1$ having $0$ as an eigenvalue of algebraic multiplicity two. Let $q_{0}$ s…

Reconstruction through a coisotropic reduction: the missing momentum on a Poincaré section as a branched covering

Newton geometry of Bogdanov-Takens degeneracies in integrable dilatonic models: invariant divisors and boundary multiplicity

The Bogdanov--Takens normal-form coefficients in Rn as directional derivatives of the characteristic invariants

The Bogdanov--Takens normal-form coefficients in $R^{n}$ as directional derivatives of the characteristic invariants