Schrödinger Operators with Δ-interactions Supported on Conical Surfaces

نویسندگان

  • JUSSI BEHRNDT
  • VLADIMIR LOTOREICHIK
چکیده

We investigate the spectral properties of self-adjoint Schrödinger operators with attractive δ-interactions of constant strength α > 0 supported on conical surfaces in R3. It is shown that the essential spectrum is given by [−α2/4,+∞) and that the discrete spectrum is infinite and accumulates to −α2/4. Furthermore, an asymptotic estimate of these eigenvalues is obtained.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Schrödinger Operators with Δ and Δ′-interactions on Lipschitz Surfaces and Chromatic Numbers of Associated Partitions

We investigate Schrödinger operators with δ and δ′-interactions supported on hypersurfaces, which separate the Euclidean space into finitely many bounded and unbounded Lipschitz domains. It turns out that the combinatorial properties of the partition and the spectral properties of the corresponding operators are related. As the main result we prove an operator inequality for the Schrödinger ope...

متن کامل

One-dimensional Schrödinger Operators with Δ′-interactions on Cantor-type Sets

We introduce a novel approach for defining a δ′-interaction on a subset of the real line of Lebesgue measure zero which is based on Sturm– Liouville differential expression with measure coefficients. This enables us to establish basic spectral properties (e.g., self-adjointness, lower semiboundedness and spectral asymptotics) of Hamiltonians with δ′-interactions concentrated on sets of complica...

متن کامل

Singular Continuous Spectrum of Half-line Schrödinger Operators with Point Interactions on a Sparse Set

We say that a discrete set X = {xn}n∈N0 on the half-line 0 = x0 < x1 < x2 < x3 < · · · < xn < · · · < +∞ is sparse if the distances ∆xn = xn+1−xn between neighbouring points satisfy the condition ∆xn ∆xn−1 → +∞. In this paper half-line Schrödinger operators with point δand δ′-interactions on a sparse set are considered. Assuming that strengths of point interactions tend to ∞ we give simple suff...

متن کامل

Approximation of Schrödinger operators with δ-interactions sup- ported on hypersurfaces

We show that a Schrödinger operator Aδ,α with a δ-interaction of strength α supported on a bounded or unbounded C-hypersurface Σ ⊂ R, d ≥ 2, can be approximated in the norm resolvent sense by a family of Hamiltonians with suitably scaled regular potentials. The differential operator Aδ,α with a singular interaction is regarded as a self-adjoint realization of the formal differential expression ...

متن کامل

On the Spectral Properties of Dirac Operators with Electrostatic Δ-shell Interactions

In this paper the spectral properties of Dirac operators Aη with electrostatic δ-shell interactions of constant strength η supported on compact smooth surfaces in R3 are studied. Making use of boundary triple techniques a Krein type resolvent formula and a Birman-Schwinger principle are obtained. With the help of these tools some spectral, scattering, and asymptotic properties of Aη are investi...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2014