Theoretical Physics

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Questions related to Theoretical Physics

What is the problem with interaction field theories in which the energies are unbounded from below?

The potential of the Yukawa theory is unbounded from below for large enough $\phi$. The same is valid for the electrodynamic potential, which is unbounded from below for large enough $A_\mu$. So...

11 November 2016 3,824 22 View

How can zeta potential represent surface charge density?

Hi, I have zeta potential value of a suspension. I know that zeta potential and surface charge density is different but they are related. I was wondering if you guys can help me to relate these...

11 November 2016 9,661 1 View

Is there a space dilation due to gravity? or it is prohibited?

The gravity affects the time and leads to its dilation, why this should not be happened also to space, is the length contraction previously found in special relativity lead to this prohibition?

11 November 2016 3,279 55 View

How to determine the ionization probability of the Point defects from a Coulombic potential as function of applied electric field?

please ans

11 November 2016 8,431 2 View

There are two kinds of leptonic mass matrices M_{\nu} resulted out from Inverse seesaw mechanism. How do we realize differently while using them?

There are two leptonic mass matrices obtained while working in Inverse seesaw regime, 1. M\nu = {{0, mD, 0} ,{mDT, 0, M}, {0, MT, \mu}}, 2. M\nu = {{0, mDT, 0}, {mD, 0, MT}, {0, M , \mu}}. After...

11 November 2016 5,205 1 View

There are two kinds of leptonic mass matrices M_{\nu} resulted out from Inverse seesaw mechanism. How do we realize differently while using them?

There are two leptonic mass matrices obtained while working in Inverse seesaw regime, 1. M\nu = {{0, mD, 0} ,{mDT, 0, M}, {0, MT, \mu}}, 2. M\nu = {{0, mDT, 0}, {mD, 0, MT}, {0, M , \mu}}. After...

07 November 2016 1,040 1 View

What is the valid relationship between the stability of macroscopic system and the extensive property of state parameters?

My problem is arised from the calculation result of entropy in a system.There are three degenerate energy states ,and put N indistinguishable particles to these discrete energy when the...

25 October 2016 9,155 2 View

Error in the mathematical formulation of Einstein's equivalence principle ?

On the Wikipedia page about the principle of equivalence, it is written:

10 October 2016 2,864 9 View

What is the valid relationship between the stability of macroscopic system and the extensive property of state parameters?

My problem is arised from the calculation result of entropy in a system.There are three degenerate energy states ,and put N indistinguishable particles to these discrete energy when the...

10 October 2016 4,739 4 View

What is the right Lagrangian for planar QED in 2+1 dimensions?

If I want to describe an interacting dirac electron gas, confined to 2 spacetime dimensions in a perpendicular magnetic field by a QFT lagrangian, I could not just take simple QED3. To get the...

30 September 2016 4,381 9 View

Are there research subjects on theoretically predicted but not discovered yet phenomenon?

Electromagnetic wave is an example of phenomenon which is invisible (except for light or high power fields) and which has been discovered thanks to visible experiences with electricity and...

21 September 2016 5,907 35 View

What is the right Lagrangian for planar QED in 2+1 dimensions?

If I want to describe an interacting dirac electron gas, confined to 2 spacetime dimensions in a perpendicular magnetic field by a QFT lagrangian, I could not just take simple QED3. To get the...

09 September 2016 4,878 9 View

Are there research subjects on theoretically predicted but not discovered yet phenomenon?

Electromagnetic wave is an example of phenomenon which is invisible (except for light or high power fields) and which has been discovered thanks to visible experiences with electricity and...

09 September 2016 10,252 35 View

What happens to the photon energy that is lost to cosmic redshift?

About 380,000 years after the Big Bang, the black body radiation that filled the universe was at a temperature of about 3,000 degrees K. Today, these same photons are at a black body temperature...

09 September 2016 6,821 54 View

Can Black Holes process quantum information?

Spinning black holes are capable of complex quantum information processes encoded in the X-ray photons emitted by the accretion disk http://arxiv.org/abs/1608.06822

26 August 2016 8,211 2 View

What is the asymptotic behavior of the two quarks interaction in the limit of small distances and in the limit of long distances?

quantum chronodynamics. It is known that at small distances two quarks do not interact and interaction remains constant at large distances. So the question stands: What is the asymptotic behavior...

25 August 2016 3,077 1 View

Can any one discuss about the types of interaction/coupling that occur in the case of an atomic qubit-qutrit system?

Interaction between atomic two level and three level systems

23 August 2016 3,084 3 View

Can anyone help me to understand keller box method clearly?Is there anyo ne with whom I can discuss my problem regarding this method?

I have attached there some equations which is needed to be solved by keller box method.but I have faced problems with block elimination portion because of here momentum equation starts with f''...

16 August 2016 2,658 4 View

Can anyone help me to understand keller box method clearly?Is there anyo ne with whom I can discuss my problem regarding this method?

I have attached there some equations which is needed to be solved by keller box method.but I have faced problems with block elimination portion because of here momentum equation starts with f''...

08 August 2016 5,073 2 View

how would the band structure look like for the theoretical material that absorbs the entire spectrum of sunlight and converts it into electricity?

How would be its property be like, for e.g., the electron mobility, absorption, band gap, effective mass and stability ? conceptually ? Considering a broad absorbing material like perovskite...

08 August 2016 9,343 2 View

Do the true objects really contract at relativistic velocities?

From the point of view of relativity theory, the mass objects seen as moving with close to c velocities contract, increase their mass and the time almost stops on them. However, from purely...

08 August 2016 1,502 74 View

Would an electron model that allowed simulation of spin pumping be of interest to the laser researchers using spin pumping to create their lasers?

The Bergman-Allen electron model spread-sheet may be found on my ResearchGate web page, and also a spread-sheet concerning a spin pumping analysis of this model ... assumed isolated from other...

08 August 2016 674 4 View

Can any one discuss about the types of interaction/coupling that occur in the case of an atomic qubit-qutrit system?

Interaction between atomic two level and three level systems

08 August 2016 8,357 3 View

How to manually calculate the energy of the bonding and anti-bonding of various orbitals of different atoms ?

Given their orbital and the distance between each other. What it takes to find the energy of the given condition ?

08 August 2016 1,863 2 View

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