Can PT-symmetric system yield chaotic solutions?

More Samit Kumar Gupta's questions See All

How can I block the coupling between adjacent waveguides?

I have a number of nonlinear waveguides, say six. I don't want coupling between specific two waveguides. Other than keeping them large distance away, what are the other possibilities to ensure no...

06 July 2014 8,917 13 View

Is parity-time symmetry a fundamental aspect of nature? Both locally and globally?

In recent times, the study of parity-time symmetry has been quite active in diverse areas of physics (i.e. quantum field theory, open quantum systems) and in optics it has been experimentally...

03 April 2014 6,978 5 View

Can the universe be computer-like simulation?

Physicists have devised a new experiment to test if the universe is a computer. A philosophical thought experiment has long held that it is more likely than not that we're living inside a...

08 September 2013 2,229 14 View

What is the way to ensure funding in research activity?

It is seen that most of the researchers are unable to realize their ideas because of the lack of funding. So, it is very important to create or ensure a funding possibility.

08 September 2013 4,478 2 View

What is void or nothingness?

In fact, is absolute nothingness under logical acceptance? How does it depend on reference frame we are talking about?

07 August 2013 9,108 88 View

What's your take on Fibonacci series?

Given the fact that it is considered one of the mysterious mathematical entity having its presence in nature, science, art so on. It is also said that it could be the secret code of nature...

06 July 2013 7,340 52 View

What is physical significance of Parity-Time symmetry?

In recent research perspective this is very important field. Parity operation is reversal of co-ordinate (x->-x, p->-p)and time reversal operation is reversal of time (x->x,p->-p, i->-i). But...

03 April 2013 9,752 3 View

What's so special about Fibonacci Series? Can it explain how everything evolved in nature?

We see Fibonacci series in the way the flowers are made in, the spiral galaxies are formed by, or even so many parts of organ of creatures are biologically evolved over time ( say hard shell of...

02 March 2013 3,134 6 View

Is Nature deterministic or probabilistic?

Keeping in mind, the contrasting classical and the quantum world.

31 December 2012 7,711 12 View

What is time? Is it discrete or continuous?

Apart from that time is a physical quantity, if we try to understand time a bit more physically and intuitively then it won't be that simple. It looks like time is a sort of inherent property...

31 December 2012 6,199 25 View

Problems about acousto-optic coupling in Comsol, how to check whether the moving mesh is correct?

I’m trying to reproduce the acousto-optic coupling simulation in the paper Frequency–angular resolving LiDAR using chip-scale acousto-optic beam steering. LNOI(lithium niobate on insulator) is...

13 August 2024 9,795 0 View

Stability of the Solar System: Insights from Einstein’s Equations ?

The stability of the Solar System is a complex subject that blends the classical framework of Newtonian mechanics with the modern insights provided by General Relativity (GR). Understanding this...

07 August 2024 2,569 1 View

Is it possible to plot the atom-projected band structure using GPAW?

Hi, I'm currently working on a project where I need to plot the atom-projected band structure using GPAW. I've been able to calculate the band structure for my material, but I'm having trouble...

07 August 2024 269 3 View

Should I include H atom into C3N5 when i am doing DFT modelling?

Hi all, my experimental XPS results shown that my C3N5 sample consists of N-H bond, hence in this case I should incorporate the N-H bond into my DFT modelling. However, I do notice several papers...

07 August 2024 8,414 2 View

Are there any good simple systems or platforms to recommend?

In order to show people the beauty of control and enhance enthusiasm for learning control theories, are there any good simple systems or platforms to recommend?

05 August 2024 10,034 1 View

Why do exism movements become permanent dictatorship threats within liberal democracy thinking under majority rule-independent rule of law system?

Exism movements after gaining power within liberal democracies under majority rule and independent rule of law system become permanent dictatorship threats, but why this is the case is not clear...

04 August 2024 8,125 3 View

How to use Density Functional Theory to calculate carrier mobilities of solid system?

Hello, everyone. I have tried to determine carrier motilities of some materials, by Density Functional Theory, using Quantum ESPRESSO. There are a few methods to do it, like a package called...

04 August 2024 8,894 1 View

Can a Conventional 50W visible LED Lamp Emit UV Light?

I'm researching light sources and their UV emissions. I'm curious if a 50W, 7500K conventional LED lamp emits any UV light. I found that a 200W tungsten lamp can emit up to 1.5 mW/cm² at 350 nm....

31 July 2024 3,843 7 View

How can I calculate formation energy using VASP-Ab-initio?

I would like to calculate the formation energy of P2-Na0.67Fe0.5Mn0.5O2 based on DFT, what should I do step by step. Any help would be appreciated. Thanks.

29 July 2024 8,248 2 View

In terms of chaos, what is the necessary and sufficient condition for authoritarianism, permanent or temporary, to come to exist and persist?

Since 2016 Brexit, the world needed to change the thinking behind traditional democracy as the democratic landscape changed, yet traditional democratic thinkers and actors have been acting as if...

28 July 2024 6,515 1 View