Srila Prabhupada explains that anti-matter and matter are both Krsna's energy.

Tamal Krsna - "Srila Prabhupada, someone asked a question the other day about the atom which I couldn’t give the answer to. His question is that if we say that within the atom the living entity, the jiva, is present, and life symptoms means six symptoms of birth, growth"

Srila Prabhupada - "That’s all right. Their life symptoms has not yet come. But there is".

Jayadvaita - "Potential".

Srila Prabhupada - "Yes".

Tamal Krsna - "His question was, it was sort of a dual question. At what time, or what…? Just like at the time of disintegration of this body, the living entity leaves this body and the body disintegrates, so does the atomic body also disintegrate when the living entity leaves it and moves to a higher body?"

Srila Prabhupada - "Atomic body? Atomic body means material body. Unless you are free from this material body, the atomic body will go on with you. That means unless you are mukta, the atomic body will go on. Mind, intelligence, ego — they are also atomic, finer atomic body (subtle body)".

Tamal Krsna - "But within each atom the living entity is present?"

Srila Prabhupada - "Yes. God is present; therefore living entity is present".

Tamal Krsna - "So the living entity is present within the atom just as I am present within this body. When I leave this body, my body breaks apart".

Srila Prabhupada - "Yes, you leave this body, enter another body".

Tamal Krsna - "Right".

Srila Prabhupada - "By nature’s law".

Tamal Krsna - "And when I leave this body, the body breaks apart".

Srila Prabhupada - "Eh?"

Tamal Krsna - "When I leave this body, the body dis…"

Srila Prabhupada - "The body is already atomic combination".

Tamal Krsna - "Yes".

Srila Prabhupada - "So it remains atomic combination. You leave the body".

Tamal Krsna - "Yes. It remains…"

Srila Prabhupada - "You leave the house. That does not mean the house is finished".

Tamal Krsna - "Right, I can understand that".

Hamsaduta - "He’s asking that if the soul leaves the atomic particle, then does the particle break apart. Isn’t it?"

Srila Prabhupada - "No, no. You have not left atomic particle".

Tamal Krsna - "No, but you, you’re… I think you were saying that within the atom there’s also a living entity. So when that living entity leaves the atomic particle does the particle break apart? Or doesn’t it? I mean what…?"

Srila Prabhupada - "Just try to understand. From the sastra, you understand that andantara-stham: “God lives within the atom.”

Tamal Krsna - "Yes".

Srila Prabhupada - "And when the God is there, living entity’s also there. This… This much you try to understand. Because God and living entity, they remain together, as two friends. God is trying to save this fallen friend. That is the information from Upanisad. So when God is there, the living entity is also there". 

Rupanuga - "So Paramatma and jiva-soul are always together". 

Srila Prabhupada - "Yes". 

Pancadravida - "The jivas inside the atom, are they like impersonalists who are in the Brahman?" 

Srila Prabhupada - "That you consider. He has not developed his consciousness. Practically, it is like dead". (Morning Walk April 4 1975, Mayapur)

Existence in the impersonal brahman or dormant within the atom is also within the category of non-Krsna consciousness.

One may be in that condition for a very, very long time but such a condition is only temporary.

This is because the nature of the jiva-soul is to be always active and NOT inactive or dormant.

Those who are in the brahman effulgence or inactive within the atom are also in a fallen condition, so there is no question of falling down from a fallen condition. 

Being dormant in the atom or Brahmajyoti is a fallen condition, an unnatural condition of consciousness.

When fall takes place, it means falling down from the non-fallen condition. The non-fallen condition is Krsna consciousness in Vaikuntha. 

So long as one can maintains pure Krsna consciousness, the jiva-soul is not fallen down. 

As soon as the jiva-soul becomes out of Krsna consciousness immediately he is fallen down. 

Srila Prabhupada - “As living spiritual souls we are all originally Krsna conscious entities, but due to our association with matter from time immemorial, our consciousness has now become polluted by the material atmosphere.” (Original Hare Krsna "Happening record album" New York December 1966)

Srila Prabhupada - "So, even in the Vaikuntha, if I desire that ‘Why shall I serve Krsna? Why not become Krsna?’ I immediately fall down.” (July 8, 1976 in Washington, D.C.)

The jiva-soul's original form is having the same bodily features as Krsna, sat, cit, ananda, vigraha which means 

eternity, 

knowledge, 

bliss,

FORM.

Remember the jiva-soul is an eternal PERSON held together by form Prabhupada explains here-

Devotee – “Is the original body of the spirit soul a human form?”

Srila Prabhupada – “Yes, human form. God is also human form. "Man is made after the shape of God." I think there is in the Bible. Is it not? So God is also like human form. Here you see Krsna, two hands, two legs”.

Hari-sauri – “How do we understand, then, that there are peacocks and flowers and trees in the spiritual world? Are these not eternal forms?”

Srila Prabhupada – “[describing material form first]: Yes. They are more covered. Just like if you cover your body with blanket, the hands and legs are invisible. But you are not the blanket. So the trees and plants, they are more covered. They are not in full manifestation. The human form is the full manifestation of the soul”.

Hari-sauri - “They are covered in the spiritual world?”

Srila Prabhupada - “Not in the spiritual world. There that is voluntary. Some devotee wants to serve Krsna as flower; they become flower there. If I want to be a flower I shall lie down at the lotus feet of Krsna, he becomes flower, voluntarily, and he can change his, from flower to human body. That is spiritual life. There is no restriction. If some devotee wants to serve Krsna as cow, he serves Krsna as cow, as calf, as flower, as plant, as water, as ground, field, or as father, as mother, as friend, as beloved, anything. It is inconceivable, yet a fact". (Srimad Bhagavatam 6.1.1-4 - Melbourne, May 20, 1975)

The full potential and original feature of all marginal living entities (jiva-souls) is a two arm form like Krsna's Form.

It is from Goloka Vrindavana that some jiva-souls choose to enter the Vaikuntha Planets and appear there in a blue four armed form similar to Lord Visnu.

The appearance of eternal youth only exists on the Vaikuntha Planets, where as in Goloka Vrindavana one does not have a body that is blue like Krsnas, there it is different with more variety of bodily forms.

It is one's "rasa" that is eternal (but changable among other eternal bodies), what ever body that maybe, like Krsna's uncle, parents, the old shop owner etc.

Bodily appearance there is according to pastime, everyone does not look the same in Goloka Vrindavana like they do on the Vaikuntha Planets

Everything is originally based on "personalism" or spiritual energy known as  "anti-matter" who are unlimited individual jiva-souls (marginal living entities), and also Visnu-tattva direct expansions of Krsna who is the Supreme Personality of Godhead and cause of ALL causes.

The jiva-soul is simply active as anti-matter (spiritual energy), and inactive or dormant as matter (also spiritual energy).

Both anti-matter and matter are what makes up the Spiritual Sky.

With dead matter like stone in the material creation, the consciousness of the jiva-souls as/in that stone are completely dormant, which means almost dead (totally inactive) hence dead matter, another aspect of impersonalism.

The only difference between "matter", where the jiva-souls are mostly dormant and inactive, and "anti-matter", is the jiva-souls are fully active.

However, the material creation is where "anti-matter" (jiva-souls) are dormant (inactive) making them "dead matter" and therefore inert in an impersonal existence where they appear devoid of life.

1/4 of the Spiritual Sky is like this known as matter and therefore inactive.

3/4 of the Spiritual Sky is anti-matter which means spiritually active.

Dead matter is also part of the spiritual sky but is where the individual jiva-souls are inactive or dormant, hence dead matter.

Other jiva-souls in the material creation are covered and restricted by this same matter in different grades.

All matter is made up of atoms with both Paramatma and the dormant (inactive) individual jiva-souls present there in the atom. 

The natural full potential of the jiva-soul is to be fully active ultimately in the service of Krsna.

God (Visnu) and the individual jiva-soul are always together even within the "atom"

Srila Prabhupada - "Just try to understand. From the sastra, you understand that andantara-stham: “God lives within the atom and when the God is there, the living entity is also there. This much you try to understand. Because God and living entity always remain together, as two friends. God is trying to save this fallen friend. That is the information from Upanisad. So when God is there in the atom, the living entity is also there". (Morning Walk April 4 1975, Mayapur).+×+.