246 research outputs found
André Breton’s Nadja: A \u3cem\u3eVagabonde\u3c/em\u3e in a \u3cem\u3eFemme Fatale’s\u3c/em\u3e Narrative
No full textThrough diverse styles of written and visual text (diary and pseudo-autobiographical narrative, drawings and photographs), André Breton—the narrative agent of Nadja (1928, revised by the author, 1962) who happens to share the author\u27s name—sets forth to recount his interactions with a mysterious âme errante whom he follows literally down a myriad of Parisian streets and figuratively to diverse avenues of self-understanding. However, if Breton initially finds himself intrigued—dare we say obsessed—by the eponymous Nadja, as the narrative progresses her aimless wandering, telepathic powers and free association speech eventually bore, unnerve and even frighten him. In fact, Nadja\u27s errant words and actions become so threatening for Breton that he ceases to see her in the best interest of his own wellbeing. At the work\u27s conclusion, Nadja\u27s wandering is put to an end when she is interned in an insane asylum; as if to underline his change of heart, Breton does nothing to free or even visit Nadja, preferring instead to pursue a far safer and less enigmatic love interest
Delta kick cooling for cold atom interferometry and its application in space missions
No full textStudent will design, build and test experimental quantum optics systems to study the interaction of single atom-resonant photons and atom-resonant entangled photon pairs with atomic systems.Delta kick cooling (DKC) gives control over the free expansion of Bose-Einstein-Condensates for the purpose of atom interferometry. Recent projects and future proposals on how to apply DKC for cold atom interferometry in space missions are outlined. This thesis provides both a classical analytical as well as a numerical solution to the evolution of the atom cloud distribution in phase space of a thermal ensemble. It investigates how duration and strength of the kick will influence the same. Furthermore, a numerical solution to the Gross-Pitaevskii Equation for the DKC of a Bose-Einstein condensate is presented
Delta kick cooling for cold atom interferometry and its application in space missions
No full textStudent will design, build and test experimental quantum optics systems to study the interaction of single atom-resonant photons and atom-resonant entangled photon pairs with atomic systems.Delta kick cooling (DKC) gives control over the free expansion of Bose-Einstein-Condensates for the purpose of atom interferometry. Recent projects and future proposals on how to apply DKC for cold atom interferometry in space missions are outlined. This thesis provides both a classical analytical as well as a numerical solution to the evolution of the atom cloud distribution in phase space of a thermal ensemble. It investigates how duration and strength of the kick will influence the same. Furthermore, a numerical solution to the Gross-Pitaevskii Equation for the DKC of a Bose-Einstein condensate is presented
Wave-packet evolution during laser pulses driving an atomic clock transition
No full textSingle-photon optical transitions enable novel applications of atom interferometry to dark-matter and gravitational-wave detection. This work investigates the wave-packet evolution for an atom's center of mass during a laser pulse driving such a transition. Particular attention is paid to the effects of finite pulse duration on the central trajectory of the atomic wave packets and the phase that they acquire in the diffraction process. While the resulting deviations of the central trajectories are typically quite small, they can have a significant impact on the interferometric phase shift in high-precision measurements and a detailed analysis is therefore important. Our approach relies on a description of the matter-wave propagation in terms of central trajectories and centered wave packets
Стратегии конструирования идентичности в мусульманском хип-хопе. Разносторонний анализ творчества немецкого рэпера Сахиры
No full textThe aim of Nadja Thoma's paper is to explore how young Muslim artists construct identity within contemporary hip-hop culture in Germany. Using the example of the rapper Sahira,the author focuses on the following questions: Which strategies are used to express religious identities in hip-hop? Which modifications of the traditional hip-hop culture can be observed within and through elements of Muslim culture and religion? The data used in the paper ranges from visual resources (a CD cover and the logo of the record label) to song lyrics and interview excerpts.In the first section of her paper the author offers an orientation towards hip-hop culture, introducing a number of important cultural concepts for the successive discussion. Then she provides an overview of discussions about the permissivity of music, especially hip-hop andIslam. Finally, Thoma deals with identity construction in German hip-hop culture and discusses of how cultural and religious identity is constructed in the work of the German rapper Sahira. At the conclusion, Nadja Thoma states, that multimodal analysis shows that German Muslim rap is the achievement of a recontextualization process, wherein a global cultural model has been adapted to a specific audience in a different reception country. Beyond the mere use of different languages as markers for ethnic belonging, Sahira uses religious visual codes and linguistic phrases in order to transgress ethnic differences and monocultural, monoreligious or Islamophobic conceptions which, in her opinion, could restrict communication. Furthermore, the different visual and linguistic elements are a demonstration of Sahira's ability to insert new elements into the existing hip-hop culture, one of the abilities which label someone a good and real rapper.Надя Тома анализирует в своей статье способы конструирования мусульманской идентичности средствами современной молодежной культуры на примере немецкой хип-хоп-исполнительницы палестинского происхождения Сахиры. Констатируя широкое распространение альтернативной музыкальной культуры, в частности хип-хопа в субкультуре молодых мусульман Германии, автор задается вопросом, какие стратегии используют современные мусульманские рэперы для выражения своей конфессиональной идентичности, как модифицируются стандарты хип-хоп-культуры в преломлении исполнителей мусульман и в соединении с элементами традиционной исламской культуры и религии. Исследуя обширную дискографию немецкого хип-хопа, Тома демонстрирует, что взаимодействие ислама и хип-хопа носит обоюдный характер, что выражается в росте числа принимающих ислам рэперов немусульманского происхождения. Рассматривая пример Сахиры как case-study, исследовательница приходит к выводу, что в этом примере проявляется процесс «реконтекстуализации», когда глобальная культурная модель (в данном случае, музыкальный стиль) адаптируется к потребностям специфической мусульманской аудитории отдельной страны. При этом религиозная символика и знаковая система используется как для преодоления этнолингивистических различий разных групп аудитории исполнителя, так и для разрушения монокультуралистских и исламофобских стереотипов германского общества. Таким образом, Сахира утверждает себя не только как истинная мусульманка, но и как «реальный» рэпер
Wave-packet evolution during a laser pulse for single- and two-photon atomic diffraction
No full textHigh-precision atom interferometry allows application to dark-matter and gravitational-wave detection. This work investigates the wave-packet evolution for an atom's center of mass during a laser pulse driving a single photon or Raman transition of arbitrary duration as well as a Bragg transition in the deep Bragg regime. We consider the effects of finite pulse duration on the central trajectory of the atomic wave packets for beam splitter and mirror pulses, as well as pulses with arbitrary pulse areas, with square and gaussian pulse shapes. The investigation further includes the most general case involving non-vanishing detuning. While the resulting deviations of the central trajectories are typically quite small, they can have a significant impact on the interferometric phase shift in high-precision measurements and a detailed analysis is therefore important. Our approach relies on a description of the matter-wave propagation in terms of central trajectories and centered wave packets
Wave-packet evolution during laser pulses driving an atomic clock transition
No full textSingle-photon optical transitions enable novel applications of atom interferometry to dark-matter and gravitational-wave detection. This work investigates the wave-packet evolution for an atom's center of mass during a laser pulse driving such a transition. Particular attention is paid to the effects of finite pulse duration on the central trajectory of the atomic wave packets and the phase that they acquire in the diffraction process. While the resulting deviations of the central trajectories are typically quite small, they can have a significant im- pact on the interferometric phase shift in high-precision measurements and a detailed analysis is therefore important. Our approach relies on a description of the matter-wave propagation in terms of central trajectories and centered wave packets
Wave-packet evolution during a laser pulse for single- and two-photon atomic diffraction
No full textHigh-precision atom interferometry allows application to dark-matter and gravitational-wave detection.
This work investigates the wave-packet evolution for an atom's center of mass during a laser pulse driving a single photon or Raman transition of arbitrary duration as well as a Bragg transition in the deep Bragg regime. We consider the effects of finite pulse duration on the central trajectory of the atomic wave packets for beam splitter and mirror pulses, as well as pulses with arbitrary pulse areas, with square and gaussian pulse shapes. The investigation further includes the most general case involving non-vanishing detuning. While the resulting deviations of the central trajectories are typically quite small, they can have a significant impact on the interferometric phase shift in high-precision measurements and a detailed analysis is therefore important.
Our approach relies on a description of the matter-wave propagation in terms of central trajectories and centered wave packets
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