In Canon, a horcrux is a fragment of a soul. But it stands to reason that this will not be the full answer in MoR, as it’s a fairly serious violation of the author’s beliefs
I would guess that the author sees conservation of energy as pretty important also. I would not be at all surprised if souls really exist in the HPMoR universe.
Va gur Nhgube’f Abgrf sbe Puncgref 39--40 (Cergraqvat gb Or Jvfr), Ryvrmre nccrnef gb or qryvorengryl inthr nf gb jurgure gur UCZBE havirefr unf na nsgreyvsr. Ng yrnfg, gung’f ubj V ernq guvf:
Vg’f na vagrerfgvat dhrfgvba nf gb jurgure Uneel vf orunivat nf n Syng Rnegu Ngurvfg jvgu erfcrpg gb uvf fxrcgvpvfz nobhg na nsgreyvsr. Gb or engvbany, lbh jnag gb unir gur fbeg bs zvaq gung, vs vg svaqf vgfrys va n jbeyq jvgu ab nsgreyvsr, qbrfa’g oryvrir va na nsgreyvsr, naq vs vg svaqf vgfrys va n jbeyq jvgu na nsgreyvsr, qbrf oryvrir va na nsgreyvsr. W. X. Ebjyvat pyrneyl oryvrirq gung gur Cbggreirefr unq na nsgreyvsr, naq jebgr vg nppbeqvatyl; vs Uneel svaqf uvzfrys va gung havirefr, naq ur fgvyy qbrfa’g oryvrir va na nsgreyvsr, gung’f abg arprffnevyl n tbbq fvta sbe uvf engvbanyvgl.
Lrf, ohg fbzrgvzrf gur rivqrapr ninvynoyr gb lbh vf zvfyrnqvat. V qba’g guvax gur rkvfgrag rivqrapr whfgvsvrf oryvrs va na nsgreyvsr, tvira gur xabjyrqtr ninvynoyr gb Uneel.
I would guess that the author sees conservation of energy as pretty important also. I would not be at all surprised if souls really exist in the HPMoR universe.
Va gur Nhgube’f Abgrf sbe Puncgref 39--40 (Cergraqvat gb Or Jvfr), Ryvrmre nccrnef gb or qryvorengryl inthr nf gb jurgure gur UCZBE havirefr unf na nsgreyvsr. Ng yrnfg, gung’f ubj V ernq guvf:
Lrf, ohg fbzrgvzrf gur rivqrapr ninvynoyr gb lbh vf zvfyrnqvat. V qba’g guvax gur rkvfgrag rivqrapr whfgvsvrf oryvrs va na nsgreyvsr, tvira gur xabjyrqtr ninvynoyr gb Uneel.