Exact response functions of a 2-D Fermion fluid
| ISSN: |
1089-7658
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| Source: |
AIP Digital Archive
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| Topics: |
Mathematics
Physics
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| Notes: |
Exact k-space density response of a perfect Fermion (spinless) fluid in the ground state to external potentials is derived in a closed form to all orders in two dimensions. The results are expressed in terms of geometrical invariants. The most distinct features in two dimensions are that no short wave-vector response depends on kF (the Fermi wave vector), and the usual first-order linear response function R˜(k) is a constant for k≤2kF.
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| Type of Medium: |
Electronic Resource
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| URL: |