Alex Gershkov
- Published in print:
- 2015
- Published Online:
- May 2016
- ISBN:
- 9780262028400
- eISBN:
- 9780262327732
- Item type:
- chapter
- Publisher:
- The MIT Press
- DOI:
- 10.7551/mitpress/9780262028400.003.0006
- Subject:
- Economics and Finance, Financial Economics
In this chapter the authors review several models where agents are long-lived and hence they can manipulate the timing of their purchase. They first study the case where agents are long lived but ...
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In this chapter the authors review several models where agents are long-lived and hence they can manipulate the timing of their purchase. They first study the case where agents are long lived but objects are short lived. Then they review models where both agents and goods are long lived. They present applications to queue management of randomly arriving customers who are awarded priorities for using a processing device. Finally, the authors consider a class of dynamic screening models where the population is fixed, while the private information evolves over time.Less
In this chapter the authors review several models where agents are long-lived and hence they can manipulate the timing of their purchase. They first study the case where agents are long lived but objects are short lived. Then they review models where both agents and goods are long lived. They present applications to queue management of randomly arriving customers who are awarded priorities for using a processing device. Finally, the authors consider a class of dynamic screening models where the population is fixed, while the private information evolves over time.
B. K. Ridley FRS
- Published in print:
- 2013
- Published Online:
- December 2013
- ISBN:
- 9780199677214
- eISBN:
- 9780191760624
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780199677214.003.0009
- Subject:
- Physics, Condensed Matter Physics / Materials
Electrons in a semiconductor undergo polar scattering due to charged impurities, piezoelectric modes, holes, other electrons, and optical phonons — all of which are susceptible to electrical ...
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Electrons in a semiconductor undergo polar scattering due to charged impurities, piezoelectric modes, holes, other electrons, and optical phonons — all of which are susceptible to electrical screening by the mobile electron gas. Because the frequencies of acoustic phonons which can interact with electrons are quite low, the screening of the piezoelectric interaction can be adequately described by static screening. When the density of the electron gas is high, dynamic screening and plasma effects become inextricably mixed and must be treated together. This chapter focuses on the dynamic screening of electrons in semiconductors, first by considering polar optical modes, plasma modes, and coupled modes. It then discusses the Lindhard dielectric function, fluctuations, and four regimes of dynamic screening effects.Less
Electrons in a semiconductor undergo polar scattering due to charged impurities, piezoelectric modes, holes, other electrons, and optical phonons — all of which are susceptible to electrical screening by the mobile electron gas. Because the frequencies of acoustic phonons which can interact with electrons are quite low, the screening of the piezoelectric interaction can be adequately described by static screening. When the density of the electron gas is high, dynamic screening and plasma effects become inextricably mixed and must be treated together. This chapter focuses on the dynamic screening of electrons in semiconductors, first by considering polar optical modes, plasma modes, and coupled modes. It then discusses the Lindhard dielectric function, fluctuations, and four regimes of dynamic screening effects.
