Semiclassical Gravitation
半经典引力
基本信息
- 批准号:264569680
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:德国
- 项目类别:Research Grants
- 财政年份:2014
- 资助国家:德国
- 起止时间:2013-12-31 至 2018-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The unification of quantum theory with gravity is still an open problem. The application of standard quantization rules to classical general relativity has led to a number of conceptual and technical problems (like the problem of time, finding solutions to the Wheeler-DeWitt equation, etc.). Therefore one often resorts to a semi-classical approximation. In this approximation, gravity is treated classically, being described by a space-time metric, while matter, say a scalar field, is treated as a quantum field on curved space-time, taking the quantum mechanical average of the energy stress tensor.Still this treatment suffers from the notorious measurement problem: A superposition of spatially separated wave packets (Schrödinger cat states) would generate a gravitational field which suggests that there is matter here and there, while according to Born's rule matter could be only here or there. The measurement problem is solved by Bohmian mechanics and it is therefore natural to apply Bohmian mechanics in semiclassical situations. We shall study this approach to semi classicality starting from simpler models and ending in a better semiclassical theory of gravity with sharper results than the ones achieved until now. Experimental verifications of our sharper results are feasible. The work is planned in collaboration with Dr. Ward Struyve (now Rutgers) as Post Doc.
量子论与引力的统一仍然是一个悬而未决的问题。将标准量子化规则应用于经典广义相对论导致了许多概念和技术问题(如时间问题,寻找惠勒-德维特方程的解等)。因此,人们常常求助于半经典近似。在这个近似中,重力被经典地处理,用时空度量来描述,而物质,比如说标量场,被视为弯曲时空上的量子场,取能量应力张量的量子力学平均值。然而,这种处理方法仍然面临着一个臭名昭著的测量问题:空间分离波包(Schrödinger cat状态)的叠加将产生一个引力场,这表明这里和那里都有物质,而根据玻恩的规则,物质只能在这里或那里。测量问题是由波希曼力学解决的,因此在半经典情况下应用波希曼力学是很自然的。我们将研究这种半经典的方法,从简单的模型开始,最后得到一个更好的引力半经典理论,其结果比迄今为止取得的结果更清晰。实验验证我们更清晰的结果是可行的。这项工作计划与沃德·斯特鲁维博士(现为罗格斯大学)合作,担任博士后。
项目成果
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科研奖励数量(0)
会议论文数量(0)
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Professor Dr. Detlef Dürr (†)其他文献
Professor Dr. Detlef Dürr (†)的其他文献
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{{ truncateString('Professor Dr. Detlef Dürr (†)', 18)}}的其他基金
Stochastic differential equations in Hilbert spaces: solutions and asymptotic behavior
希尔伯特空间中的随机微分方程:解和渐近行为
- 批准号:
31294094 - 财政年份:2006
- 资助金额:
-- - 项目类别:
Research Grants
Mikroskopische Begründung des quantenmechanischen Streuquerschnittes mehrerer Teilchen
几种粒子的量子力学散射截面的微观论证
- 批准号:
5407012 - 财政年份:2003
- 资助金额:
-- - 项目类别:
Research Grants
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