پديد آورنده :
حاجي برات، آرش
عنوان :
برهمكنش نوسانات خلا با دو آينه كوانتومي
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
ذرات بنيادي
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده فيزيك
صفحه شمار :
پنج، 84ص.: مصور
يادداشت :
ص. ع. به فارسي و انگليسي
استاد راهنما :
بهروز ميرزا
استاد مشاور :
احمد شيرزاد
توصيفگر ها :
خلا كوانتومي , ميدان اسكالر كلاين - گوردون , اثر كازيمير
استاد داور :
فرهنگ لران اصفهاني، احمد برزو
تاريخ ورود اطلاعات :
1396/03/21
چكيده انگليسي :
Abstract The absolute value of the quantum vacuum energy density is generally neglected in non gravitational physics However this thesis provides a non gravitational system where this value does have physical significance The system is two mirrors each with an internal degree of freedom which interacts with a massless scalar field The mirror modelling that we use is based on the recent articles of William G Unruh We intend to use this mirror model to perceive the Casimir effect and we will show that there is a Casimir force between these two mirrors But this force is logarithmically infinitive therefore the Casimir force is divergent But this infinite force provides an infinite acceleration for the mirrors but two vacuum properties give rise to confined movement of the mirrors 1 the vacuum friction which resists the mirror s motion and 2 The repulsive force when the mirrors are very close to each other which is called the strong anti correlation of vacuum fluctuations These two forces are both divergent and overcome the effects of the Casimir force and cause the mirrors to begin oscillating in a limited area of space so that the attractive Casimir force type moves the mirrors towards each other but the vacuum friction which is exerted in the opposite direction of each mirror s movement partially moderates the attractive force The attractive force is reduced as the mirrors get closer and then after a distance the attractive force changes into the repulsive force and therefore the mirrors get away from each other but still the friction force is exerted in the opposite direction of each mirror s movement In other words in this case the friction force partly moderates the repulsive force as well Again as they get away from each other the repulsion changes into attraction and this causes the mirrors to oscillate in a limited region of space In addition we have shown that the mirrors will become transparent to high frequency waves in a natural way and by using that we will offer another solution to limit the exerted forces on the mirrors The solution is a cut off frequency This cutoff frequency can be used to justify the transparency of the mirrors with respect to the high frequency waves and is manually entered into the theory PDF created with pdfFactory Pro trial version www pdffactory com
استاد راهنما :
بهروز ميرزا
استاد مشاور :
احمد شيرزاد
استاد داور :
فرهنگ لران اصفهاني، احمد برزو
