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19932026
most citedPoint Interaction in two and three dimensional Riemannian Manifolds

23 citations · 177 across the 40 of their papers we have counts for

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math-ph2026

Perturbation Theory for Time-Dependent Point Interactions with Discrete Spectrum

Kaya Güven Akbaş, Fatih Erman, O. Teoman Turgut

We develop a perturbative framework for time-dependent point interactions in quantum systems with purely discrete unperturbed spectrum. In two and three dimensions the point intera…

math-ph2023★ 2 cited

On Schrödinger Operators Modified by Interactions

Kaya Güven Akbaş, Fatih Erman, O. Teoman Turgut

We study the spectral properties of a Schrödinger operator modified by interactions and show explicitly how the poles of the new Green's function are rearranged relative…

math-ph2022★ 1 cited

Rank One Perturbations Supported by Hybrid Geometries and Their Deformations

Fatih Erman, Sema Seymen, Osman Teoman Turgut

We study the hybrid type of rank one perturbations in and , where the perturbation supported by a circle/sphere is considered together with the delta p…

math-ph2019

Relativistic Lee Model and its Resolvent Analysis

Yesukhei Jagvaral, O. Teoman Turgut, Meltem Ünel

We reexamine the relativistic 2+1 dimensional Lee model in light-front coordinates on flat space and on a space-time with a spatial section given by a compact manifold in the usual…

math-ph2016★ 1 cited

Born-Oppenheimer Approximation for a Simple Renormalizable System

Haci Akbas, O. Teoman Turgut

We discuss a simple singular system in two dimension, two heavy particles interacting with a light particle via an attractive contact interaction. Although intuitively clear the ac…

math-ph2016

Born-Oppenheimer Approximation for a Singular System

Haci Akbas, O. Teoman Turgut

We discuss a simple singular system in one dimension, two heavy particles interacting with a light particle via an attractive contact interaction. It is natural to apply Born-Oppen…